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</pre><pre class='rust '>
<span class='comment'>// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT</span>
<span class='comment'>// file at the top-level directory of this distribution and at</span>
<span class='comment'>// http://rust-lang.org/COPYRIGHT.</span>
<span class='comment'>//</span>
<span class='comment'>// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class='comment'>// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class='comment'>// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class='comment'>// option. This file may not be copied, modified, or distributed</span>
<span class='comment'>// except according to those terms.</span>
<span class='doccomment'>//! A simple map based on a vector for small integer keys. Space requirements</span>
<span class='doccomment'>//! are O(highest integer key).</span>
<span class='attribute'>#<span class='op'>!</span>[<span class='ident'>cfg_attr</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>, <span class='ident'>feature</span>(<span class='ident'>drain</span>, <span class='ident'>iter_order</span>))]</span>
<span class='attribute'>#<span class='op'>!</span>[<span class='ident'>cfg_attr</span>(<span class='ident'>all</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>, <span class='ident'>test</span>), <span class='ident'>feature</span>(<span class='ident'>hash_default</span>))]</span>
<span class='kw'>use</span> <span class='self'>self</span>::<span class='ident'>Entry</span>::<span class='op'>*</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>cmp</span>::<span class='ident'>max</span>;
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span> <span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>cmp</span>::<span class='ident'>Ordering</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>fmt</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>hash</span>::{<span class='ident'>Hash</span>, <span class='ident'>Hasher</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>iter</span>::{<span class='ident'>Enumerate</span>, <span class='ident'>FilterMap</span>, <span class='ident'>Map</span>, <span class='ident'>FromIterator</span>};
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span> <span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>iter</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>mem</span>::{<span class='ident'>replace</span>, <span class='ident'>swap</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>ops</span>::{<span class='ident'>Index</span>, <span class='ident'>IndexMut</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>slice</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>vec</span>;
<span class='doccomment'>/// A map optimized for small integer keys.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut months = VecMap::new();</span>
<span class='doccomment'>/// months.insert(1, "Jan");</span>
<span class='doccomment'>/// months.insert(2, "Feb");</span>
<span class='doccomment'>/// months.insert(3, "Mar");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// if !months.contains_key(&12) {</span>
<span class='doccomment'>/// println!("The end is near!");</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(months.get(&1), Some(&"Jan"));</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// if let Some(value) = months.get_mut(&3) {</span>
<span class='doccomment'>/// *value = "Venus";</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(months.get(&3), Some(&"Venus"));</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // Print out all months</span>
<span class='doccomment'>/// for (key, value) in &months {</span>
<span class='doccomment'>/// println!("month {} is {}", key, value);</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// months.clear();</span>
<span class='doccomment'>/// assert!(months.is_empty());</span>
<span class='doccomment'>/// ```</span>
<span class='attribute'>#[<span class='ident'>derive</span>(<span class='ident'>Clone</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'><</span><span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>>></span>,
}
<span class='doccomment'>/// A view into a single entry in a map, which may either be vacant or occupied.</span>
<span class='kw'>pub</span> <span class='kw'>enum</span> <span class='ident'>Entry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>:<span class='lifetime'>'a</span><span class='op'>></span> {
<span class='doccomment'>/// A vacant Entry</span>
<span class='ident'>Vacant</span>(<span class='ident'>VacantEntry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span>),
<span class='doccomment'>/// An occupied Entry</span>
<span class='ident'>Occupied</span>(<span class='ident'>OccupiedEntry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span>),
}
<span class='doccomment'>/// A vacant Entry.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>VacantEntry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>:<span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>map</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>,
<span class='ident'>index</span>: <span class='ident'>usize</span>,
}
<span class='doccomment'>/// An occupied Entry.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>OccupiedEntry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>:<span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>map</span>: <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>,
<span class='ident'>index</span>: <span class='ident'>usize</span>,
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>Default</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>default</span>() <span class='op'>-></span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> { <span class='ident'>VecMap</span>::<span class='ident'>new</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span>: <span class='ident'>Hash</span><span class='op'>></span> <span class='ident'>Hash</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>hash</span><span class='op'><</span><span class='ident'>H</span>: <span class='ident'>Hasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>state</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>H</span>) {
<span class='comment'>// In order to not traverse the `VecMap` twice, count the elements</span>
<span class='comment'>// during iteration.</span>
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>count</span>: <span class='ident'>usize</span> <span class='op'>=</span> <span class='number'>0</span>;
<span class='kw'>for</span> <span class='ident'>elt</span> <span class='kw'>in</span> <span class='self'>self</span> {
<span class='ident'>elt</span>.<span class='ident'>hash</span>(<span class='ident'>state</span>);
<span class='ident'>count</span> <span class='op'>+=</span> <span class='number'>1</span>;
}
<span class='ident'>count</span>.<span class='ident'>hash</span>(<span class='ident'>state</span>);
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='doccomment'>/// Creates an empty `VecMap`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>/// let mut map: VecMap<&str> = VecMap::new();</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-></span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> { <span class='ident'>VecMap</span> { <span class='ident'>v</span>: <span class='macro'>vec</span><span class='macro'>!</span>[] } }
<span class='doccomment'>/// Creates an empty `VecMap` with space for at least `capacity`</span>
<span class='doccomment'>/// elements before resizing.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>/// let mut map: VecMap<&str> = VecMap::with_capacity(10);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>with_capacity</span>(<span class='ident'>capacity</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>VecMap</span> { <span class='ident'>v</span>: <span class='ident'>Vec</span>::<span class='ident'>with_capacity</span>(<span class='ident'>capacity</span>) }
}
<span class='doccomment'>/// Returns the number of elements the `VecMap` can hold without</span>
<span class='doccomment'>/// reallocating.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>/// let map: VecMap<String> = VecMap::with_capacity(10);</span>
<span class='doccomment'>/// assert!(map.capacity() >= 10);</span>
<span class='doccomment'>/// ```</span>
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>capacity</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> {
<span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>capacity</span>()
}
<span class='doccomment'>/// Reserves capacity for the given `VecMap` to contain `len` distinct keys.</span>
<span class='doccomment'>/// In the case of `VecMap` this means reallocations will not occur as long</span>
<span class='doccomment'>/// as all inserted keys are less than `len`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// The collection may reserve more space to avoid frequent reallocations.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>/// let mut map: VecMap<&str> = VecMap::new();</span>
<span class='doccomment'>/// map.reserve_len(10);</span>
<span class='doccomment'>/// assert!(map.capacity() >= 10);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reserve_len</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>) {
<span class='kw'>let</span> <span class='ident'>cur_len</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>();
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'>>=</span> <span class='ident'>cur_len</span> {
<span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>reserve</span>(<span class='ident'>len</span> <span class='op'>-</span> <span class='ident'>cur_len</span>);
}
}
<span class='doccomment'>/// Reserves the minimum capacity for the given `VecMap` to contain `len` distinct keys.</span>
<span class='doccomment'>/// In the case of `VecMap` this means reallocations will not occur as long as all inserted</span>
<span class='doccomment'>/// keys are less than `len`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// Note that the allocator may give the collection more space than it requests.</span>
<span class='doccomment'>/// Therefore capacity cannot be relied upon to be precisely minimal. Prefer</span>
<span class='doccomment'>/// `reserve_len` if future insertions are expected.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>/// let mut map: VecMap<&str> = VecMap::new();</span>
<span class='doccomment'>/// map.reserve_len_exact(10);</span>
<span class='doccomment'>/// assert!(map.capacity() >= 10);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>reserve_len_exact</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>len</span>: <span class='ident'>usize</span>) {
<span class='kw'>let</span> <span class='ident'>cur_len</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>();
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'>>=</span> <span class='ident'>cur_len</span> {
<span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>reserve_exact</span>(<span class='ident'>len</span> <span class='op'>-</span> <span class='ident'>cur_len</span>);
}
}
<span class='doccomment'>/// Returns an iterator visiting all keys in ascending order of the keys.</span>
<span class='doccomment'>/// The iterator's element type is `usize`.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>keys</span><span class='op'><</span><span class='lifetime'>'r</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Keys</span><span class='op'><</span><span class='lifetime'>'r</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>first</span><span class='op'><</span><span class='ident'>A</span>, <span class='ident'>B</span><span class='op'>></span>((<span class='ident'>a</span>, _): (<span class='ident'>A</span>, <span class='ident'>B</span>)) <span class='op'>-></span> <span class='ident'>A</span> { <span class='ident'>a</span> }
<span class='kw'>let</span> <span class='ident'>first</span>: <span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='ident'>V</span>)) <span class='op'>-></span> <span class='ident'>usize</span> <span class='op'>=</span> <span class='ident'>first</span>; <span class='comment'>// coerce to fn pointer</span>
<span class='ident'>Keys</span> { <span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>iter</span>().<span class='ident'>map</span>(<span class='ident'>first</span>) }
}
<span class='doccomment'>/// Returns an iterator visiting all values in ascending order of the keys.</span>
<span class='doccomment'>/// The iterator's element type is `&'r V`.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>values</span><span class='op'><</span><span class='lifetime'>'r</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Values</span><span class='op'><</span><span class='lifetime'>'r</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>second</span><span class='op'><</span><span class='ident'>A</span>, <span class='ident'>B</span><span class='op'>></span>((_, <span class='ident'>b</span>): (<span class='ident'>A</span>, <span class='ident'>B</span>)) <span class='op'>-></span> <span class='ident'>B</span> { <span class='ident'>b</span> }
<span class='kw'>let</span> <span class='ident'>second</span>: <span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='ident'>V</span>)) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='ident'>V</span> <span class='op'>=</span> <span class='ident'>second</span>; <span class='comment'>// coerce to fn pointer</span>
<span class='ident'>Values</span> { <span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>iter</span>().<span class='ident'>map</span>(<span class='ident'>second</span>) }
}
<span class='doccomment'>/// Returns an iterator visiting all key-value pairs in ascending order of the keys.</span>
<span class='doccomment'>/// The iterator's element type is `(usize, &'r V)`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// map.insert(3, "c");</span>
<span class='doccomment'>/// map.insert(2, "b");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // Print `1: a` then `2: b` then `3: c`</span>
<span class='doccomment'>/// for (key, value) in map.iter() {</span>
<span class='doccomment'>/// println!("{}: {}", key, value);</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>iter</span><span class='op'><</span><span class='lifetime'>'r</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'r</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>Iter</span> {
<span class='ident'>front</span>: <span class='number'>0</span>,
<span class='ident'>back</span>: <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>(),
<span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>iter</span>()
}
}
<span class='doccomment'>/// Returns an iterator visiting all key-value pairs in ascending order of the keys,</span>
<span class='doccomment'>/// with mutable references to the values.</span>
<span class='doccomment'>/// The iterator's element type is `(usize, &'r mut V)`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// map.insert(2, "b");</span>
<span class='doccomment'>/// map.insert(3, "c");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// for (key, value) in map.iter_mut() {</span>
<span class='doccomment'>/// *value = "x";</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// for (key, value) in &map {</span>
<span class='doccomment'>/// assert_eq!(value, &"x");</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>iter_mut</span><span class='op'><</span><span class='lifetime'>'r</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'r</span> <span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>IterMut</span><span class='op'><</span><span class='lifetime'>'r</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>IterMut</span> {
<span class='ident'>front</span>: <span class='number'>0</span>,
<span class='ident'>back</span>: <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>(),
<span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>iter_mut</span>()
}
}
<span class='doccomment'>/// Moves all elements from `other` into the map while overwriting existing keys.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut a = VecMap::new();</span>
<span class='doccomment'>/// a.insert(1, "a");</span>
<span class='doccomment'>/// a.insert(2, "b");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut b = VecMap::new();</span>
<span class='doccomment'>/// b.insert(3, "c");</span>
<span class='doccomment'>/// b.insert(4, "d");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// a.append(&mut b);</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(a.len(), 4);</span>
<span class='doccomment'>/// assert_eq!(b.len(), 0);</span>
<span class='doccomment'>/// assert_eq!(a[1], "a");</span>
<span class='doccomment'>/// assert_eq!(a[2], "b");</span>
<span class='doccomment'>/// assert_eq!(a[3], "c");</span>
<span class='doccomment'>/// assert_eq!(a[4], "d");</span>
<span class='doccomment'>/// ```</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>append</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='kw'>Self</span>) {
<span class='self'>self</span>.<span class='ident'>extend</span>(<span class='ident'>other</span>.<span class='ident'>drain</span>());
}
<span class='doccomment'>/// Splits the collection into two at the given key.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// Returns a newly allocated `Self`. `self` contains elements `[0, at)`,</span>
<span class='doccomment'>/// and the returned `Self` contains elements `[at, max_key)`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// Note that the capacity of `self` does not change.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut a = VecMap::new();</span>
<span class='doccomment'>/// a.insert(1, "a");</span>
<span class='doccomment'>/// a.insert(2, "b");</span>
<span class='doccomment'>/// a.insert(3, "c");</span>
<span class='doccomment'>/// a.insert(4, "d");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let b = a.split_off(3);</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(a[1], "a");</span>
<span class='doccomment'>/// assert_eq!(a[2], "b");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(b[3], "c");</span>
<span class='doccomment'>/// assert_eq!(b[4], "d");</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>split_off</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>at</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='kw'>Self</span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>other</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='kw'>if</span> <span class='ident'>at</span> <span class='op'>==</span> <span class='number'>0</span> {
<span class='comment'>// Move all elements to other</span>
<span class='ident'>swap</span>(<span class='self'>self</span>, <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>other</span>);
<span class='kw'>return</span> <span class='ident'>other</span>
} <span class='kw'>else</span> <span class='kw'>if</span> <span class='ident'>at</span> <span class='op'>>=</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>() {
<span class='comment'>// No elements to copy</span>
<span class='kw'>return</span> <span class='ident'>other</span>;
}
<span class='comment'>// Look up the index of the first non-None item</span>
<span class='kw'>let</span> <span class='ident'>first_index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>iter</span>().<span class='ident'>position</span>(<span class='op'>|</span><span class='ident'>el</span><span class='op'>|</span> <span class='ident'>el</span>.<span class='ident'>is_some</span>());
<span class='kw'>let</span> <span class='ident'>start_index</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='ident'>first_index</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>index</span>) <span class='op'>=></span> <span class='ident'>max</span>(<span class='ident'>at</span>, <span class='ident'>index</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> {
<span class='comment'>// self has no elements</span>
<span class='kw'>return</span> <span class='ident'>other</span>;
}
};
<span class='comment'>// Fill the new VecMap with `None`s until `start_index`</span>
<span class='ident'>other</span>.<span class='ident'>v</span>.<span class='ident'>extend</span>((<span class='number'>0</span>..<span class='ident'>start_index</span>).<span class='ident'>map</span>(<span class='op'>|</span>_<span class='op'>|</span> <span class='prelude-val'>None</span>));
<span class='comment'>// Move elements beginning with `start_index` from `self` into `other`</span>
<span class='ident'>other</span>.<span class='ident'>v</span>.<span class='ident'>extend</span>(<span class='self'>self</span>.<span class='ident'>v</span>[<span class='ident'>start_index</span>..].<span class='ident'>iter_mut</span>().<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>el</span><span class='op'>|</span> <span class='ident'>el</span>.<span class='ident'>take</span>()));
<span class='ident'>other</span>
}
<span class='doccomment'>/// Returns an iterator visiting all key-value pairs in ascending order of</span>
<span class='doccomment'>/// the keys, emptying (but not consuming) the original `VecMap`.</span>
<span class='doccomment'>/// The iterator's element type is `(usize, &'r V)`. Keeps the allocated memory for reuse.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// map.insert(3, "c");</span>
<span class='doccomment'>/// map.insert(2, "b");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let vec: Vec<(usize, &str)> = map.drain().collect();</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]);</span>
<span class='doccomment'>/// ```</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>drain</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Drain</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>filter</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span>((<span class='ident'>i</span>, <span class='ident'>v</span>): (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span>)) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>A</span>)<span class='op'>></span> {
<span class='ident'>v</span>.<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>v</span><span class='op'>|</span> (<span class='ident'>i</span>, <span class='ident'>v</span>))
}
<span class='kw'>let</span> <span class='ident'>filter</span>: <span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>)) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> <span class='op'>=</span> <span class='ident'>filter</span>; <span class='comment'>// coerce to fn ptr</span>
<span class='ident'>Drain</span> { <span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>drain</span>(..).<span class='ident'>enumerate</span>().<span class='ident'>filter_map</span>(<span class='ident'>filter</span>) }
}
<span class='doccomment'>/// Returns the number of elements in the map.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut a = VecMap::new();</span>
<span class='doccomment'>/// assert_eq!(a.len(), 0);</span>
<span class='doccomment'>/// a.insert(1, "a");</span>
<span class='doccomment'>/// assert_eq!(a.len(), 1);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>len</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>usize</span> {
<span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>iter</span>().<span class='ident'>filter</span>(<span class='op'>|</span><span class='ident'>elt</span><span class='op'>|</span> <span class='ident'>elt</span>.<span class='ident'>is_some</span>()).<span class='ident'>count</span>()
}
<span class='doccomment'>/// Returns true if the map contains no elements.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut a = VecMap::new();</span>
<span class='doccomment'>/// assert!(a.is_empty());</span>
<span class='doccomment'>/// a.insert(1, "a");</span>
<span class='doccomment'>/// assert!(!a.is_empty());</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>is_empty</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>iter</span>().<span class='ident'>all</span>(<span class='op'>|</span><span class='ident'>elt</span><span class='op'>|</span> <span class='ident'>elt</span>.<span class='ident'>is_none</span>())
}
<span class='doccomment'>/// Clears the map, removing all key-value pairs.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut a = VecMap::new();</span>
<span class='doccomment'>/// a.insert(1, "a");</span>
<span class='doccomment'>/// a.clear();</span>
<span class='doccomment'>/// assert!(a.is_empty());</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>clear</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) { <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>clear</span>() }
<span class='doccomment'>/// Returns a reference to the value corresponding to the key.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// assert_eq!(map.get(&1), Some(&"a"));</span>
<span class='doccomment'>/// assert_eq!(map.get(&2), None);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>get</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>key</span>: <span class='kw-2'>&</span><span class='ident'>usize</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>if</span> <span class='op'>*</span><span class='ident'>key</span> <span class='op'><</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>() {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>v</span>[<span class='op'>*</span><span class='ident'>key</span>] {
<span class='prelude-val'>Some</span>(<span class='kw-2'>ref</span> <span class='ident'>value</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>value</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>None</span>
}
} <span class='kw'>else</span> {
<span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Returns true if the map contains a value for the specified key.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// assert_eq!(map.contains_key(&1), true);</span>
<span class='doccomment'>/// assert_eq!(map.contains_key(&2), false);</span>
<span class='doccomment'>/// ```</span>
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>contains_key</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>key</span>: <span class='kw-2'>&</span><span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='self'>self</span>.<span class='ident'>get</span>(<span class='ident'>key</span>).<span class='ident'>is_some</span>()
}
<span class='doccomment'>/// Returns a mutable reference to the value corresponding to the key.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// if let Some(x) = map.get_mut(&1) {</span>
<span class='doccomment'>/// *x = "b";</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>/// assert_eq!(map[1], "b");</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>get_mut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='kw-2'>&</span><span class='ident'>usize</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>if</span> <span class='op'>*</span><span class='ident'>key</span> <span class='op'><</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>() {
<span class='kw'>match</span> <span class='op'>*</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>v</span>[<span class='op'>*</span><span class='ident'>key</span>]) {
<span class='prelude-val'>Some</span>(<span class='kw-2'>ref</span> <span class='kw-2'>mut</span> <span class='ident'>value</span>) <span class='op'>=></span> <span class='prelude-val'>Some</span>(<span class='ident'>value</span>),
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='prelude-val'>None</span>
}
} <span class='kw'>else</span> {
<span class='prelude-val'>None</span>
}
}
<span class='doccomment'>/// Inserts a key-value pair into the map. If the key already had a value</span>
<span class='doccomment'>/// present in the map, that value is returned. Otherwise, `None` is returned.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// assert_eq!(map.insert(37, "a"), None);</span>
<span class='doccomment'>/// assert_eq!(map.is_empty(), false);</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// map.insert(37, "b");</span>
<span class='doccomment'>/// assert_eq!(map.insert(37, "c"), Some("b"));</span>
<span class='doccomment'>/// assert_eq!(map[37], "c");</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>insert</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='ident'>usize</span>, <span class='ident'>value</span>: <span class='ident'>V</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='ident'>len</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>();
<span class='kw'>if</span> <span class='ident'>len</span> <span class='op'><=</span> <span class='ident'>key</span> {
<span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>extend</span>((<span class='number'>0</span>..<span class='ident'>key</span> <span class='op'>-</span> <span class='ident'>len</span> <span class='op'>+</span> <span class='number'>1</span>).<span class='ident'>map</span>(<span class='op'>|</span>_<span class='op'>|</span> <span class='prelude-val'>None</span>));
}
<span class='ident'>replace</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>v</span>[<span class='ident'>key</span>], <span class='prelude-val'>Some</span>(<span class='ident'>value</span>))
}
<span class='doccomment'>/// Removes a key from the map, returning the value at the key if the key</span>
<span class='doccomment'>/// was previously in the map.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// assert_eq!(map.remove(&1), Some("a"));</span>
<span class='doccomment'>/// assert_eq!(map.remove(&1), None);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='kw-2'>&</span><span class='ident'>usize</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>if</span> <span class='op'>*</span><span class='ident'>key</span> <span class='op'>>=</span> <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>len</span>() {
<span class='kw'>return</span> <span class='prelude-val'>None</span>;
}
<span class='kw'>let</span> <span class='ident'>result</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>v</span>[<span class='op'>*</span><span class='ident'>key</span>];
<span class='ident'>result</span>.<span class='ident'>take</span>()
}
<span class='doccomment'>/// Gets the given key's corresponding entry in the map for in-place manipulation.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut count: VecMap<u32> = VecMap::new();</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// // count the number of occurrences of numbers in the vec</span>
<span class='doccomment'>/// for x in vec![1, 2, 1, 2, 3, 4, 1, 2, 4] {</span>
<span class='doccomment'>/// *count.entry(x).or_insert(0) += 1;</span>
<span class='doccomment'>/// }</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(count[1], 3);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>entry</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>key</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='ident'>Entry</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='comment'>// FIXME(Gankro): this is basically the dumbest implementation of</span>
<span class='comment'>// entry possible, because weird non-lexical borrows issues make it</span>
<span class='comment'>// completely insane to do any other way. That said, Entry is a border-line</span>
<span class='comment'>// useless construct on VecMap, so it's hardly a big loss.</span>
<span class='kw'>if</span> <span class='self'>self</span>.<span class='ident'>contains_key</span>(<span class='kw-2'>&</span><span class='ident'>key</span>) {
<span class='ident'>Occupied</span>(<span class='ident'>OccupiedEntry</span> {
<span class='ident'>map</span>: <span class='self'>self</span>,
<span class='ident'>index</span>: <span class='ident'>key</span>,
})
} <span class='kw'>else</span> {
<span class='ident'>Vacant</span>(<span class='ident'>VacantEntry</span> {
<span class='ident'>map</span>: <span class='self'>self</span>,
<span class='ident'>index</span>: <span class='ident'>key</span>,
})
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Entry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='doccomment'>/// Ensures a value is in the entry by inserting the default if empty, and</span>
<span class='doccomment'>/// returns a mutable reference to the value in the entry.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>or_insert</span>(<span class='self'>self</span>, <span class='ident'>default</span>: <span class='ident'>V</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='ident'>Occupied</span>(<span class='ident'>entry</span>) <span class='op'>=></span> <span class='ident'>entry</span>.<span class='ident'>into_mut</span>(),
<span class='ident'>Vacant</span>(<span class='ident'>entry</span>) <span class='op'>=></span> <span class='ident'>entry</span>.<span class='ident'>insert</span>(<span class='ident'>default</span>),
}
}
<span class='doccomment'>/// Ensures a value is in the entry by inserting the result of the default</span>
<span class='doccomment'>/// function if empty, and returns a mutable reference to the value in the</span>
<span class='doccomment'>/// entry.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>or_insert_with</span><span class='op'><</span><span class='ident'>F</span>: <span class='ident'>FnOnce</span>() <span class='op'>-></span> <span class='ident'>V</span><span class='op'>></span>(<span class='self'>self</span>, <span class='ident'>default</span>: <span class='ident'>F</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='kw'>match</span> <span class='self'>self</span> {
<span class='ident'>Occupied</span>(<span class='ident'>entry</span>) <span class='op'>=></span> <span class='ident'>entry</span>.<span class='ident'>into_mut</span>(),
<span class='ident'>Vacant</span>(<span class='ident'>entry</span>) <span class='op'>=></span> <span class='ident'>entry</span>.<span class='ident'>insert</span>(<span class='ident'>default</span>()),
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>VacantEntry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='doccomment'>/// Sets the value of the entry with the VacantEntry's key,</span>
<span class='doccomment'>/// and returns a mutable reference to it.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>insert</span>(<span class='self'>self</span>, <span class='ident'>value</span>: <span class='ident'>V</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>index</span>;
<span class='self'>self</span>.<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='ident'>index</span>, <span class='ident'>value</span>);
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>map</span>[<span class='ident'>index</span>]
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>OccupiedEntry</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='doccomment'>/// Gets a reference to the value in the entry.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>get</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='ident'>V</span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>index</span>;
<span class='kw-2'>&</span><span class='self'>self</span>.<span class='ident'>map</span>[<span class='ident'>index</span>]
}
<span class='doccomment'>/// Gets a mutable reference to the value in the entry.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>get_mut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>index</span>;
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>map</span>[<span class='ident'>index</span>]
}
<span class='doccomment'>/// Converts the entry into a mutable reference to its value.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>into_mut</span>(<span class='self'>self</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>index</span>;
<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>.<span class='ident'>map</span>[<span class='ident'>index</span>]
}
<span class='doccomment'>/// Sets the value of the entry with the OccupiedEntry's key,</span>
<span class='doccomment'>/// and returns the entry's old value.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>insert</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>value</span>: <span class='ident'>V</span>) <span class='op'>-></span> <span class='ident'>V</span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>index</span>;
<span class='self'>self</span>.<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='ident'>index</span>, <span class='ident'>value</span>).<span class='ident'>unwrap</span>()
}
<span class='doccomment'>/// Takes the value of the entry out of the map, and returns it.</span>
<span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>remove</span>(<span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>V</span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>index</span>;
<span class='self'>self</span>.<span class='ident'>map</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='ident'>index</span>).<span class='ident'>unwrap</span>()
}
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span>: <span class='ident'>PartialEq</span><span class='op'>></span> <span class='ident'>PartialEq</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>eq</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>bool</span> {
<span class='ident'>iter</span>::<span class='ident'>order</span>::<span class='ident'>eq</span>(<span class='self'>self</span>.<span class='ident'>iter</span>(), <span class='ident'>other</span>.<span class='ident'>iter</span>())
}
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span>: <span class='ident'>Eq</span><span class='op'>></span> <span class='ident'>Eq</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span>: <span class='ident'>PartialOrd</span><span class='op'>></span> <span class='ident'>PartialOrd</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>partial_cmp</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>Ordering</span><span class='op'>></span> {
<span class='ident'>iter</span>::<span class='ident'>order</span>::<span class='ident'>partial_cmp</span>(<span class='self'>self</span>.<span class='ident'>iter</span>(), <span class='ident'>other</span>.<span class='ident'>iter</span>())
}
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span>: <span class='ident'>Ord</span><span class='op'>></span> <span class='ident'>Ord</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>cmp</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>other</span>: <span class='kw-2'>&</span><span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>) <span class='op'>-></span> <span class='ident'>Ordering</span> {
<span class='ident'>iter</span>::<span class='ident'>order</span>::<span class='ident'>cmp</span>(<span class='self'>self</span>.<span class='ident'>iter</span>(), <span class='ident'>other</span>.<span class='ident'>iter</span>())
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span>: <span class='ident'>fmt</span>::<span class='ident'>Debug</span><span class='op'>></span> <span class='ident'>fmt</span>::<span class='ident'>Debug</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>not</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>))]</span>
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='string'>"{{"</span>));
<span class='kw'>for</span> (<span class='ident'>i</span>, (<span class='ident'>k</span>, <span class='ident'>v</span>)) <span class='kw'>in</span> <span class='self'>self</span>.<span class='ident'>iter</span>().<span class='ident'>enumerate</span>() {
<span class='kw'>if</span> <span class='ident'>i</span> <span class='op'>!=</span> <span class='number'>0</span> { <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='string'>", "</span>)); }
<span class='macro'>try</span><span class='macro'>!</span>(<span class='macro'>write</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='string'>"{}: {:?}"</span>, <span class='ident'>k</span>, <span class='op'>*</span><span class='ident'>v</span>));
}
<span class='macro'>write</span><span class='macro'>!</span>(<span class='ident'>f</span>, <span class='string'>"}}"</span>)
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>fmt</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>f</span>: <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>fmt</span>::<span class='ident'>Formatter</span>) <span class='op'>-></span> <span class='ident'>fmt</span>::<span class='prelude-ty'>Result</span> {
<span class='ident'>f</span>.<span class='ident'>debug_map</span>().<span class='ident'>entries</span>(<span class='self'>self</span>.<span class='ident'>iter</span>()).<span class='ident'>finish</span>()
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>FromIterator</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>from_iter</span><span class='op'><</span><span class='ident'>I</span>: <span class='ident'>IntoIterator</span><span class='op'><</span><span class='ident'>Item</span><span class='op'>=</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>>></span>(<span class='ident'>iter</span>: <span class='ident'>I</span>) <span class='op'>-></span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>extend</span>(<span class='ident'>iter</span>);
<span class='ident'>map</span>
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> <span class='ident'>IntoIterator</span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> (<span class='ident'>usize</span>, <span class='ident'>T</span>);
<span class='kw'>type</span> <span class='ident'>IntoIter</span> <span class='op'>=</span> <span class='ident'>IntoIter</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>;
<span class='doccomment'>/// Returns an iterator visiting all key-value pairs in ascending order of</span>
<span class='doccomment'>/// the keys, consuming the original `VecMap`.</span>
<span class='doccomment'>/// The iterator's element type is `(usize, &'r V)`.</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// # Examples</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// ```</span>
<span class='doccomment'>/// use vec_map::VecMap;</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let mut map = VecMap::new();</span>
<span class='doccomment'>/// map.insert(1, "a");</span>
<span class='doccomment'>/// map.insert(3, "c");</span>
<span class='doccomment'>/// map.insert(2, "b");</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// let vec: Vec<(usize, &str)> = map.into_iter().collect();</span>
<span class='doccomment'>///</span>
<span class='doccomment'>/// assert_eq!(vec, [(1, "a"), (2, "b"), (3, "c")]);</span>
<span class='doccomment'>/// ```</span>
<span class='kw'>fn</span> <span class='ident'>into_iter</span>(<span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>IntoIter</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>filter</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span>((<span class='ident'>i</span>, <span class='ident'>v</span>): (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>A</span><span class='op'>></span>)) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>A</span>)<span class='op'>></span> {
<span class='ident'>v</span>.<span class='ident'>map</span>(<span class='op'>|</span><span class='ident'>v</span><span class='op'>|</span> (<span class='ident'>i</span>, <span class='ident'>v</span>))
}
<span class='kw'>let</span> <span class='ident'>filter</span>: <span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span>)) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>T</span>)<span class='op'>></span> <span class='op'>=</span> <span class='ident'>filter</span>; <span class='comment'>// coerce to fn ptr</span>
<span class='ident'>IntoIter</span> { <span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>v</span>.<span class='ident'>into_iter</span>().<span class='ident'>enumerate</span>().<span class='ident'>filter_map</span>(<span class='ident'>filter</span>) }
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> <span class='ident'>IntoIterator</span> <span class='kw'>for</span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> (<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>T</span>);
<span class='kw'>type</span> <span class='ident'>IntoIter</span> <span class='op'>=</span> <span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span>;
<span class='kw'>fn</span> <span class='ident'>into_iter</span>(<span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>iter</span>()
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> <span class='ident'>IntoIterator</span> <span class='kw'>for</span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>T</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> (<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>T</span>);
<span class='kw'>type</span> <span class='ident'>IntoIter</span> <span class='op'>=</span> <span class='ident'>IterMut</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span>;
<span class='kw'>fn</span> <span class='ident'>into_iter</span>(<span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>IterMut</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>T</span><span class='op'>></span> {
<span class='self'>self</span>.<span class='ident'>iter_mut</span>()
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>Extend</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>extend</span><span class='op'><</span><span class='ident'>I</span>: <span class='ident'>IntoIterator</span><span class='op'><</span><span class='ident'>Item</span><span class='op'>=</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>iter</span>: <span class='ident'>I</span>) {
<span class='kw'>for</span> (<span class='ident'>k</span>, <span class='ident'>v</span>) <span class='kw'>in</span> <span class='ident'>iter</span> {
<span class='self'>self</span>.<span class='ident'>insert</span>(<span class='ident'>k</span>, <span class='ident'>v</span>);
}
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>: <span class='ident'>Copy</span><span class='op'>></span> <span class='ident'>Extend</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>)<span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>extend</span><span class='op'><</span><span class='ident'>I</span>: <span class='ident'>IntoIterator</span><span class='op'><</span><span class='ident'>Item</span><span class='op'>=</span>(<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>)<span class='op'>>></span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>iter</span>: <span class='ident'>I</span>) {
<span class='self'>self</span>.<span class='ident'>extend</span>(<span class='ident'>iter</span>.<span class='ident'>into_iter</span>().<span class='ident'>map</span>(<span class='op'>|</span>(<span class='ident'>key</span>, <span class='kw-2'>&</span><span class='ident'>value</span>)<span class='op'>|</span> (<span class='ident'>key</span>, <span class='ident'>value</span>)));
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>Index</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>V</span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>index</span><span class='op'><</span><span class='lifetime'>'a</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='self'>self</span>, <span class='ident'>i</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span> {
<span class='self'>self</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='ident'>i</span>).<span class='ident'>expect</span>(<span class='string'>"key not present"</span>)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>,<span class='ident'>V</span><span class='op'>></span> <span class='ident'>Index</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>usize</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Output</span> <span class='op'>=</span> <span class='ident'>V</span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>index</span>(<span class='kw-2'>&</span><span class='self'>self</span>, <span class='ident'>i</span>: <span class='kw-2'>&</span><span class='ident'>usize</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='ident'>V</span> {
<span class='self'>self</span>.<span class='ident'>get</span>(<span class='ident'>i</span>).<span class='ident'>expect</span>(<span class='string'>"key not present"</span>)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>IndexMut</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>index_mut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>i</span>: <span class='ident'>usize</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='self'>self</span>.<span class='ident'>get_mut</span>(<span class='kw-2'>&</span><span class='ident'>i</span>).<span class='ident'>expect</span>(<span class='string'>"key not present"</span>)
}
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>IndexMut</span><span class='op'><</span><span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>usize</span><span class='op'>></span> <span class='kw'>for</span> <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>index_mut</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>i</span>: <span class='kw-2'>&</span><span class='ident'>usize</span>) <span class='op'>-></span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>V</span> {
<span class='self'>self</span>.<span class='ident'>get_mut</span>(<span class='ident'>i</span>).<span class='ident'>expect</span>(<span class='string'>"key not present"</span>)
}
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>iterator</span> {
(<span class='kw'>impl</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='op'>-></span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>elem</span>:<span class='ident'>ty</span>, $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>getter</span>:<span class='ident'>ident</span>),<span class='op'>+</span>) <span class='op'>=></span> {
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Iterator</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>elem</span>;
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>next</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>elem</span><span class='op'>></span> {
<span class='kw'>while</span> <span class='self'>self</span>.<span class='ident'>front</span> <span class='op'><</span> <span class='self'>self</span>.<span class='ident'>back</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>elem</span>) <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>elem</span>$(. <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>getter</span> ())<span class='op'>+</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>x</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>index</span> <span class='op'>=</span> <span class='self'>self</span>.<span class='ident'>front</span>;
<span class='self'>self</span>.<span class='ident'>front</span> <span class='op'>+=</span> <span class='number'>1</span>;
<span class='kw'>return</span> <span class='prelude-val'>Some</span>((<span class='ident'>index</span>, <span class='ident'>x</span>));
},
<span class='prelude-val'>None</span> <span class='op'>=></span> {},
}
}
_ <span class='op'>=></span> ()
}
<span class='self'>self</span>.<span class='ident'>front</span> <span class='op'>+=</span> <span class='number'>1</span>;
}
<span class='prelude-val'>None</span>
}
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>size_hint</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span>) {
(<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='self'>self</span>.<span class='ident'>back</span> <span class='op'>-</span> <span class='self'>self</span>.<span class='ident'>front</span>))
}
}
}
}
<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>double_ended_iterator</span> {
(<span class='kw'>impl</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span> <span class='op'>-></span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>elem</span>:<span class='ident'>ty</span>, $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>getter</span>:<span class='ident'>ident</span>),<span class='op'>+</span>) <span class='op'>=></span> {
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>DoubleEndedIterator</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='attribute'>#[<span class='ident'>inline</span>]</span>
<span class='kw'>fn</span> <span class='ident'>next_back</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>elem</span><span class='op'>></span> {
<span class='kw'>while</span> <span class='self'>self</span>.<span class='ident'>front</span> <span class='op'><</span> <span class='self'>self</span>.<span class='ident'>back</span> {
<span class='kw'>match</span> <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next_back</span>() {
<span class='prelude-val'>Some</span>(<span class='ident'>elem</span>) <span class='op'>=></span> {
<span class='kw'>match</span> <span class='ident'>elem</span>$(. <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>getter</span> ())<span class='op'>+</span> {
<span class='prelude-val'>Some</span>(<span class='ident'>x</span>) <span class='op'>=></span> {
<span class='self'>self</span>.<span class='ident'>back</span> <span class='op'>-=</span> <span class='number'>1</span>;
<span class='kw'>return</span> <span class='prelude-val'>Some</span>((<span class='self'>self</span>.<span class='ident'>back</span>, <span class='ident'>x</span>));
},
<span class='prelude-val'>None</span> <span class='op'>=></span> {},
}
}
_ <span class='op'>=></span> ()
}
<span class='self'>self</span>.<span class='ident'>back</span> <span class='op'>-=</span> <span class='number'>1</span>;
}
<span class='prelude-val'>None</span>
}
}
}
}
<span class='doccomment'>/// An iterator over the key-value pairs of a map.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>:<span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>front</span>: <span class='ident'>usize</span>,
<span class='ident'>back</span>: <span class='ident'>usize</span>,
<span class='ident'>iter</span>: <span class='ident'>slice</span>::<span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>>></span>
}
<span class='comment'>// FIXME(#19839) Remove in favor of `#[derive(Clone)]`</span>
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Clone</span> <span class='kw'>for</span> <span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>clone</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>Iter</span> {
<span class='ident'>front</span>: <span class='self'>self</span>.<span class='ident'>front</span>,
<span class='ident'>back</span>: <span class='self'>self</span>.<span class='ident'>back</span>,
<span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>clone</span>()
}
}
}
<span class='macro'>iterator</span><span class='macro'>!</span> { <span class='kw'>impl</span> <span class='ident'>Iter</span> <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>), <span class='ident'>as_ref</span> }
<span class='macro'>double_ended_iterator</span><span class='macro'>!</span> { <span class='kw'>impl</span> <span class='ident'>Iter</span> <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>), <span class='ident'>as_ref</span> }
<span class='doccomment'>/// An iterator over the key-value pairs of a map, with the</span>
<span class='doccomment'>/// values being mutable.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>IterMut</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>:<span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>front</span>: <span class='ident'>usize</span>,
<span class='ident'>back</span>: <span class='ident'>usize</span>,
<span class='ident'>iter</span>: <span class='ident'>slice</span>::<span class='ident'>IterMut</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>>></span>
}
<span class='macro'>iterator</span><span class='macro'>!</span> { <span class='kw'>impl</span> <span class='ident'>IterMut</span> <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>V</span>), <span class='ident'>as_mut</span> }
<span class='macro'>double_ended_iterator</span><span class='macro'>!</span> { <span class='kw'>impl</span> <span class='ident'>IterMut</span> <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='kw-2'>mut</span> <span class='ident'>V</span>), <span class='ident'>as_mut</span> }
<span class='doccomment'>/// An iterator over the keys of a map.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Keys</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>: <span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>iter</span>: <span class='ident'>Map</span><span class='op'><</span><span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span>, <span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>)) <span class='op'>-></span> <span class='ident'>usize</span><span class='op'>></span>
}
<span class='comment'>// FIXME(#19839) Remove in favor of `#[derive(Clone)]`</span>
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Clone</span> <span class='kw'>for</span> <span class='ident'>Keys</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>clone</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Keys</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>Keys</span> {
<span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>clone</span>()
}
}
}
<span class='doccomment'>/// An iterator over the values of a map.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Values</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>: <span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>iter</span>: <span class='ident'>Map</span><span class='op'><</span><span class='ident'>Iter</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span>, <span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>)) <span class='op'>-></span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span><span class='op'>></span>
}
<span class='comment'>// FIXME(#19839) Remove in favor of `#[derive(Clone)]`</span>
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Clone</span> <span class='kw'>for</span> <span class='ident'>Values</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>clone</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> <span class='ident'>Values</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>Values</span> {
<span class='ident'>iter</span>: <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>clone</span>()
}
}
}
<span class='doccomment'>/// A consuming iterator over the key-value pairs of a map.</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>IntoIter</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='ident'>iter</span>: <span class='ident'>FilterMap</span><span class='op'><</span>
<span class='ident'>Enumerate</span><span class='op'><</span><span class='ident'>vec</span>::<span class='ident'>IntoIter</span><span class='op'><</span><span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>>></span><span class='op'>></span>,
<span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>)) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>>></span>
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>Drain</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span>:<span class='lifetime'>'a</span><span class='op'>></span> {
<span class='ident'>iter</span>: <span class='ident'>FilterMap</span><span class='op'><</span>
<span class='ident'>Enumerate</span><span class='op'><</span><span class='ident'>vec</span>::<span class='ident'>Drain</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>>></span><span class='op'>></span>,
<span class='kw'>fn</span>((<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span>)) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>>></span>
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Iterator</span> <span class='kw'>for</span> <span class='ident'>Drain</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> (<span class='ident'>usize</span>, <span class='ident'>V</span>);
<span class='kw'>fn</span> <span class='ident'>next</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next</span>() }
<span class='kw'>fn</span> <span class='ident'>size_hint</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span>) { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>size_hint</span>() }
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>DoubleEndedIterator</span> <span class='kw'>for</span> <span class='ident'>Drain</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>next_back</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next_back</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Iterator</span> <span class='kw'>for</span> <span class='ident'>Keys</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> <span class='ident'>usize</span>;
<span class='kw'>fn</span> <span class='ident'>next</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next</span>() }
<span class='kw'>fn</span> <span class='ident'>size_hint</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span>) { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>size_hint</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>DoubleEndedIterator</span> <span class='kw'>for</span> <span class='ident'>Keys</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>next_back</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next_back</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>Iterator</span> <span class='kw'>for</span> <span class='ident'>Values</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> <span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>;
<span class='kw'>fn</span> <span class='ident'>next</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>)<span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next</span>() }
<span class='kw'>fn</span> <span class='ident'>size_hint</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span>) { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>size_hint</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> <span class='ident'>DoubleEndedIterator</span> <span class='kw'>for</span> <span class='ident'>Values</span><span class='op'><</span><span class='lifetime'>'a</span>, <span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>next_back</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='kw-2'>&</span><span class='lifetime'>'a</span> <span class='ident'>V</span>)<span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next_back</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>Iterator</span> <span class='kw'>for</span> <span class='ident'>IntoIter</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>type</span> <span class='ident'>Item</span> <span class='op'>=</span> (<span class='ident'>usize</span>, <span class='ident'>V</span>);
<span class='kw'>fn</span> <span class='ident'>next</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next</span>() }
<span class='kw'>fn</span> <span class='ident'>size_hint</span>(<span class='kw-2'>&</span><span class='self'>self</span>) <span class='op'>-></span> (<span class='ident'>usize</span>, <span class='prelude-ty'>Option</span><span class='op'><</span><span class='ident'>usize</span><span class='op'>></span>) { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>size_hint</span>() }
}
<span class='kw'>impl</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> <span class='ident'>DoubleEndedIterator</span> <span class='kw'>for</span> <span class='ident'>IntoIter</span><span class='op'><</span><span class='ident'>V</span><span class='op'>></span> {
<span class='kw'>fn</span> <span class='ident'>next_back</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-></span> <span class='prelude-ty'>Option</span><span class='op'><</span>(<span class='ident'>usize</span>, <span class='ident'>V</span>)<span class='op'>></span> { <span class='self'>self</span>.<span class='ident'>iter</span>.<span class='ident'>next_back</span>() }
}
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>test</span>)]</span>
<span class='kw'>mod</span> <span class='ident'>test</span> {
<span class='kw'>use</span> <span class='ident'>super</span>::<span class='ident'>VecMap</span>;
<span class='kw'>use</span> <span class='ident'>super</span>::<span class='ident'>Entry</span>::{<span class='ident'>Occupied</span>, <span class='ident'>Vacant</span>};
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span> <span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>hash</span>::{<span class='ident'>SipHasher</span>, <span class='ident'>hash</span>};
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_get_mut</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>12</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='number'>8</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>5</span>, <span class='number'>14</span>).<span class='ident'>is_none</span>());
<span class='kw'>let</span> <span class='ident'>new</span> <span class='op'>=</span> <span class='number'>100</span>;
<span class='kw'>match</span> <span class='ident'>m</span>.<span class='ident'>get_mut</span>(<span class='kw-2'>&</span><span class='number'>5</span>) {
<span class='prelude-val'>None</span> <span class='op'>=></span> <span class='macro'>panic</span><span class='macro'>!</span>(), <span class='prelude-val'>Some</span>(<span class='ident'>x</span>) <span class='op'>=></span> <span class='op'>*</span><span class='ident'>x</span> <span class='op'>=</span> <span class='ident'>new</span>
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>5</span>), <span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='ident'>new</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_len</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>0</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>is_empty</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>5</span>, <span class='number'>20</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>1</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>map</span>.<span class='ident'>is_empty</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>11</span>, <span class='number'>12</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>2</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>map</span>.<span class='ident'>is_empty</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>14</span>, <span class='number'>22</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>3</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>map</span>.<span class='ident'>is_empty</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_clear</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>5</span>, <span class='number'>20</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>11</span>, <span class='number'>12</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>14</span>, <span class='number'>22</span>).<span class='ident'>is_none</span>());
<span class='ident'>map</span>.<span class='ident'>clear</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>is_empty</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>11</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>14</span>).<span class='ident'>is_none</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_insert</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>), <span class='prelude-val'>None</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>3</span>), <span class='prelude-val'>Some</span>(<span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>4</span>), <span class='prelude-val'>Some</span>(<span class='number'>3</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_remove</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='number'>1</span>), <span class='prelude-val'>Some</span>(<span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='number'>1</span>), <span class='prelude-val'>None</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_keys</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>'a'</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>'b'</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>'c'</span>);
<span class='kw'>let</span> <span class='ident'>keys</span>: <span class='ident'>Vec</span><span class='op'><</span>_<span class='op'>></span> <span class='op'>=</span> <span class='ident'>map</span>.<span class='ident'>keys</span>().<span class='ident'>collect</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>keys</span>.<span class='ident'>len</span>(), <span class='number'>3</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>keys</span>.<span class='ident'>contains</span>(<span class='kw-2'>&</span><span class='number'>1</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>keys</span>.<span class='ident'>contains</span>(<span class='kw-2'>&</span><span class='number'>2</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>keys</span>.<span class='ident'>contains</span>(<span class='kw-2'>&</span><span class='number'>3</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_values</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>'a'</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>'b'</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>'c'</span>);
<span class='kw'>let</span> <span class='ident'>values</span>: <span class='ident'>Vec</span><span class='op'><</span>_<span class='op'>></span> <span class='op'>=</span> <span class='ident'>map</span>.<span class='ident'>values</span>().<span class='ident'>cloned</span>().<span class='ident'>collect</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>values</span>.<span class='ident'>len</span>(), <span class='number'>3</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>values</span>.<span class='ident'>contains</span>(<span class='kw-2'>&</span><span class='string'>'a'</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>values</span>.<span class='ident'>contains</span>(<span class='kw-2'>&</span><span class='string'>'b'</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>values</span>.<span class='ident'>contains</span>(<span class='kw-2'>&</span><span class='string'>'c'</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_iterator</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>1</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='number'>10</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>10</span>, <span class='number'>11</span>).<span class='ident'>is_none</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>it</span> <span class='op'>=</span> <span class='ident'>m</span>.<span class='ident'>iter</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>11</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>0</span>, <span class='kw-2'>&</span><span class='number'>1</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>10</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>1</span>, <span class='kw-2'>&</span><span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>9</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>3</span>, <span class='kw-2'>&</span><span class='number'>5</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>7</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>6</span>, <span class='kw-2'>&</span><span class='number'>10</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>4</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>10</span>, <span class='kw-2'>&</span><span class='number'>11</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>0</span>)));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>is_none</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_iterator_size_hints</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>1</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='number'>10</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>10</span>, <span class='number'>11</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>iter</span>().<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>11</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>iter</span>().<span class='ident'>rev</span>().<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>11</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>iter_mut</span>().<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>11</span>)));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>iter_mut</span>().<span class='ident'>rev</span>().<span class='ident'>size_hint</span>(), (<span class='number'>0</span>, <span class='prelude-val'>Some</span>(<span class='number'>11</span>)));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_mut_iterator</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>1</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='number'>10</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>10</span>, <span class='number'>11</span>).<span class='ident'>is_none</span>());
<span class='kw'>for</span> (<span class='ident'>k</span>, <span class='ident'>v</span>) <span class='kw'>in</span> <span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>m</span> {
<span class='op'>*</span><span class='ident'>v</span> <span class='op'>+=</span> <span class='ident'>k</span> <span class='kw'>as</span> <span class='ident'>isize</span>;
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>it</span> <span class='op'>=</span> <span class='ident'>m</span>.<span class='ident'>iter</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>0</span>, <span class='kw-2'>&</span><span class='number'>1</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>1</span>, <span class='kw-2'>&</span><span class='number'>3</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>3</span>, <span class='kw-2'>&</span><span class='number'>8</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>6</span>, <span class='kw-2'>&</span><span class='number'>16</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>10</span>, <span class='kw-2'>&</span><span class='number'>21</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>is_none</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_rev_iterator</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>1</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='number'>10</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>10</span>, <span class='number'>11</span>).<span class='ident'>is_none</span>());
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>it</span> <span class='op'>=</span> <span class='ident'>m</span>.<span class='ident'>iter</span>().<span class='ident'>rev</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>10</span>, <span class='kw-2'>&</span><span class='number'>11</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>6</span>, <span class='kw-2'>&</span><span class='number'>10</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>3</span>, <span class='kw-2'>&</span><span class='number'>5</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>1</span>, <span class='kw-2'>&</span><span class='number'>2</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>0</span>, <span class='kw-2'>&</span><span class='number'>1</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>is_none</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_mut_rev_iterator</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>1</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='number'>10</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>10</span>, <span class='number'>11</span>).<span class='ident'>is_none</span>());
<span class='kw'>for</span> (<span class='ident'>k</span>, <span class='ident'>v</span>) <span class='kw'>in</span> <span class='ident'>m</span>.<span class='ident'>iter_mut</span>().<span class='ident'>rev</span>() {
<span class='op'>*</span><span class='ident'>v</span> <span class='op'>+=</span> <span class='ident'>k</span> <span class='kw'>as</span> <span class='ident'>isize</span>;
}
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>it</span> <span class='op'>=</span> <span class='ident'>m</span>.<span class='ident'>iter</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>0</span>, <span class='kw-2'>&</span><span class='number'>1</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>1</span>, <span class='kw-2'>&</span><span class='number'>3</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>3</span>, <span class='kw-2'>&</span><span class='number'>8</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>6</span>, <span class='kw-2'>&</span><span class='number'>16</span>));
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>unwrap</span>(), (<span class='number'>10</span>, <span class='kw-2'>&</span><span class='number'>21</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>it</span>.<span class='ident'>next</span>().<span class='ident'>is_none</span>());
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_move_iter</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>m</span>: <span class='ident'>VecMap</span><span class='op'><</span><span class='ident'>Box</span><span class='op'><</span>_<span class='op'>>></span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>m</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='number'>2</span>));
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>called</span> <span class='op'>=</span> <span class='boolval'>false</span>;
<span class='kw'>for</span> (<span class='ident'>k</span>, <span class='ident'>v</span>) <span class='kw'>in</span> <span class='ident'>m</span> {
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>called</span>);
<span class='ident'>called</span> <span class='op'>=</span> <span class='boolval'>true</span>;
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>k</span>, <span class='number'>1</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>v</span>, <span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='number'>2</span>));
}
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>called</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>test_drain_iterator</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>"a"</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"c"</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>"b"</span>);
<span class='kw'>let</span> <span class='ident'>vec</span>: <span class='ident'>Vec</span><span class='op'><</span>_<span class='op'>></span> <span class='op'>=</span> <span class='ident'>map</span>.<span class='ident'>drain</span>().<span class='ident'>collect</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>vec</span>, [(<span class='number'>1</span>, <span class='string'>"a"</span>), (<span class='number'>2</span>, <span class='string'>"b"</span>), (<span class='number'>3</span>, <span class='string'>"c"</span>)]);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>0</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>test_append</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>"a"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>"b"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"c"</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"d"</span>); <span class='comment'>// Overwrite element from a</span>
<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>4</span>, <span class='string'>"e"</span>);
<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>5</span>, <span class='string'>"f"</span>);
<span class='ident'>a</span>.<span class='ident'>append</span>(<span class='kw-2'>&</span><span class='kw-2'>mut</span> <span class='ident'>b</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>len</span>(), <span class='number'>5</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>len</span>(), <span class='number'>0</span>);
<span class='comment'>// Capacity shouldn't change for possible reuse</span>
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>capacity</span>() <span class='op'>>=</span> <span class='number'>4</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>1</span>], <span class='string'>"a"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>2</span>], <span class='string'>"b"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>3</span>], <span class='string'>"d"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>4</span>], <span class='string'>"e"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>5</span>], <span class='string'>"f"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_split_off</span>() {
<span class='comment'>// Split within the key range</span>
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>"a"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>"b"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"c"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>4</span>, <span class='string'>"d"</span>);
<span class='kw'>let</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>a</span>.<span class='ident'>split_off</span>(<span class='number'>3</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>len</span>(), <span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>len</span>(), <span class='number'>2</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>1</span>], <span class='string'>"a"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>2</span>], <span class='string'>"b"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>[<span class='number'>3</span>], <span class='string'>"c"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>[<span class='number'>4</span>], <span class='string'>"d"</span>);
<span class='comment'>// Split at 0</span>
<span class='ident'>a</span>.<span class='ident'>clear</span>();
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>"a"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>"b"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"c"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>4</span>, <span class='string'>"d"</span>);
<span class='kw'>let</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>a</span>.<span class='ident'>split_off</span>(<span class='number'>0</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>len</span>(), <span class='number'>0</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>len</span>(), <span class='number'>4</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>[<span class='number'>1</span>], <span class='string'>"a"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>[<span class='number'>2</span>], <span class='string'>"b"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>[<span class='number'>3</span>], <span class='string'>"c"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>[<span class='number'>4</span>], <span class='string'>"d"</span>);
<span class='comment'>// Split behind max_key</span>
<span class='ident'>a</span>.<span class='ident'>clear</span>();
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>"a"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>"b"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"c"</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>4</span>, <span class='string'>"d"</span>);
<span class='kw'>let</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>a</span>.<span class='ident'>split_off</span>(<span class='number'>5</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>len</span>(), <span class='number'>4</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>len</span>(), <span class='number'>0</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>1</span>], <span class='string'>"a"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>2</span>], <span class='string'>"b"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>3</span>], <span class='string'>"c"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='number'>4</span>], <span class='string'>"d"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_show</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='ident'>empty</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='op'><</span><span class='ident'>i32</span><span class='op'>></span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>4</span>);
<span class='kw'>let</span> <span class='ident'>map_str</span> <span class='op'>=</span> <span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{:?}"</span>, <span class='ident'>map</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>map_str</span> <span class='op'>==</span> <span class='string'>"{1: 2, 3: 4}"</span> <span class='op'>||</span> <span class='ident'>map_str</span> <span class='op'>==</span> <span class='string'>"{3: 4, 1: 2}"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='macro'>format</span><span class='macro'>!</span>(<span class='string'>"{:?}"</span>, <span class='ident'>empty</span>), <span class='string'>"{}"</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_clone</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>'x'</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>4</span>, <span class='string'>'y'</span>);
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='string'>'z'</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>clone</span>().<span class='ident'>iter</span>().<span class='ident'>collect</span>::<span class='op'><</span><span class='ident'>Vec</span><span class='op'><</span>_<span class='op'>>></span>(), [(<span class='number'>1</span>, <span class='kw-2'>&</span><span class='string'>'x'</span>), (<span class='number'>4</span>, <span class='kw-2'>&</span><span class='string'>'y'</span>), (<span class='number'>6</span>, <span class='kw-2'>&</span><span class='string'>'z'</span>)]);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>test_eq</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>==</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>!=</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>4</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>!=</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>5</span>, <span class='number'>19</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>!=</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span><span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>!=</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>5</span>, <span class='number'>19</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>==</span> <span class='ident'>b</span>);
<span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>with_capacity</span>(<span class='number'>1</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>==</span> <span class='ident'>b</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>test_lt</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span>(<span class='ident'>a</span> <span class='op'><</span> <span class='ident'>b</span>) <span class='op'>&&</span> <span class='op'>!</span>(<span class='ident'>b</span> <span class='op'><</span> <span class='ident'>a</span>));
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='number'>5</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'><</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='number'>7</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='op'>!</span>(<span class='ident'>a</span> <span class='op'><</span> <span class='ident'>b</span>) <span class='op'>&&</span> <span class='ident'>b</span> <span class='op'><</span> <span class='ident'>a</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>0</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span> <span class='op'><</span> <span class='ident'>a</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>0</span>, <span class='number'>6</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'><</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>6</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'><</span> <span class='ident'>b</span> <span class='op'>&&</span> <span class='op'>!</span>(<span class='ident'>b</span> <span class='op'><</span> <span class='ident'>a</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>test_ord</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'><=</span> <span class='ident'>b</span> <span class='op'>&&</span> <span class='ident'>a</span> <span class='op'>>=</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>1</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'>></span> <span class='ident'>b</span> <span class='op'>&&</span> <span class='ident'>a</span> <span class='op'>>=</span> <span class='ident'>b</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span> <span class='op'><</span> <span class='ident'>a</span> <span class='op'>&&</span> <span class='ident'>b</span> <span class='op'><=</span> <span class='ident'>a</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='number'>2</span>).<span class='ident'>is_none</span>());
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>b</span> <span class='op'>></span> <span class='ident'>a</span> <span class='op'>&&</span> <span class='ident'>b</span> <span class='op'>>=</span> <span class='ident'>a</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>a</span> <span class='op'><</span> <span class='ident'>b</span> <span class='op'>&&</span> <span class='ident'>a</span> <span class='op'><=</span> <span class='ident'>b</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>"nightly"</span>)]</span>
<span class='kw'>fn</span> <span class='ident'>test_hash</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>x</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>y</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>hash</span>::<span class='op'><</span>_, <span class='ident'>SipHasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='ident'>x</span>) <span class='op'>==</span> <span class='ident'>hash</span>::<span class='op'><</span>_, <span class='ident'>SipHasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='ident'>y</span>));
<span class='ident'>x</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>'a'</span>);
<span class='ident'>x</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>'b'</span>);
<span class='ident'>x</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>'c'</span>);
<span class='ident'>y</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>'c'</span>);
<span class='ident'>y</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>'b'</span>);
<span class='ident'>y</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>'a'</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>hash</span>::<span class='op'><</span>_, <span class='ident'>SipHasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='ident'>x</span>) <span class='op'>==</span> <span class='ident'>hash</span>::<span class='op'><</span>_, <span class='ident'>SipHasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='ident'>y</span>));
<span class='ident'>x</span>.<span class='ident'>insert</span>(<span class='number'>1000</span>, <span class='string'>'d'</span>);
<span class='ident'>x</span>.<span class='ident'>remove</span>(<span class='kw-2'>&</span><span class='number'>1000</span>);
<span class='macro'>assert</span><span class='macro'>!</span>(<span class='ident'>hash</span>::<span class='op'><</span>_, <span class='ident'>SipHasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='ident'>x</span>) <span class='op'>==</span> <span class='ident'>hash</span>::<span class='op'><</span>_, <span class='ident'>SipHasher</span><span class='op'>></span>(<span class='kw-2'>&</span><span class='ident'>y</span>));
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_from_iter</span>() {
<span class='kw'>let</span> <span class='ident'>xs</span> <span class='op'>=</span> [(<span class='number'>1</span>, <span class='string'>'a'</span>), (<span class='number'>2</span>, <span class='string'>'b'</span>), (<span class='number'>3</span>, <span class='string'>'c'</span>), (<span class='number'>4</span>, <span class='string'>'d'</span>), (<span class='number'>5</span>, <span class='string'>'e'</span>)];
<span class='kw'>let</span> <span class='ident'>map</span>: <span class='ident'>VecMap</span><span class='op'><</span>_<span class='op'>></span> <span class='op'>=</span> <span class='ident'>xs</span>.<span class='ident'>iter</span>().<span class='ident'>cloned</span>().<span class='ident'>collect</span>();
<span class='kw'>for</span> <span class='kw-2'>&</span>(<span class='ident'>k</span>, <span class='ident'>v</span>) <span class='kw'>in</span> <span class='kw-2'>&</span><span class='ident'>xs</span> {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='ident'>k</span>), <span class='prelude-val'>Some</span>(<span class='kw-2'>&</span><span class='ident'>v</span>));
}
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_index</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='number'>1</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>4</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>[<span class='number'>3</span>], <span class='number'>4</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='attribute'>#[<span class='ident'>should_panic</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_index_nonexistent</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='number'>2</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='number'>1</span>);
<span class='ident'>map</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='number'>4</span>);
<span class='ident'>map</span>[<span class='number'>4</span>];
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_entry</span>() {
<span class='kw'>let</span> <span class='ident'>xs</span> <span class='op'>=</span> [(<span class='number'>1</span>, <span class='number'>10</span>), (<span class='number'>2</span>, <span class='number'>20</span>), (<span class='number'>3</span>, <span class='number'>30</span>), (<span class='number'>4</span>, <span class='number'>40</span>), (<span class='number'>5</span>, <span class='number'>50</span>), (<span class='number'>6</span>, <span class='number'>60</span>)];
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>map</span>: <span class='ident'>VecMap</span><span class='op'><</span>_<span class='op'>></span> <span class='op'>=</span> <span class='ident'>xs</span>.<span class='ident'>iter</span>().<span class='ident'>cloned</span>().<span class='ident'>collect</span>();
<span class='comment'>// Existing key (insert)</span>
<span class='kw'>match</span> <span class='ident'>map</span>.<span class='ident'>entry</span>(<span class='number'>1</span>) {
<span class='ident'>Vacant</span>(_) <span class='op'>=></span> <span class='macro'>unreachable</span><span class='macro'>!</span>(),
<span class='ident'>Occupied</span>(<span class='kw-2'>mut</span> <span class='ident'>view</span>) <span class='op'>=></span> {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>view</span>.<span class='ident'>get</span>(), <span class='kw-2'>&</span><span class='number'>10</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>view</span>.<span class='ident'>insert</span>(<span class='number'>100</span>), <span class='number'>10</span>);
}
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>1</span>).<span class='ident'>unwrap</span>(), <span class='kw-2'>&</span><span class='number'>100</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>6</span>);
<span class='comment'>// Existing key (update)</span>
<span class='kw'>match</span> <span class='ident'>map</span>.<span class='ident'>entry</span>(<span class='number'>2</span>) {
<span class='ident'>Vacant</span>(_) <span class='op'>=></span> <span class='macro'>unreachable</span><span class='macro'>!</span>(),
<span class='ident'>Occupied</span>(<span class='kw-2'>mut</span> <span class='ident'>view</span>) <span class='op'>=></span> {
<span class='kw'>let</span> <span class='ident'>v</span> <span class='op'>=</span> <span class='ident'>view</span>.<span class='ident'>get_mut</span>();
<span class='op'>*</span><span class='ident'>v</span> <span class='op'>*=</span> <span class='number'>10</span>;
}
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>2</span>).<span class='ident'>unwrap</span>(), <span class='kw-2'>&</span><span class='number'>200</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>6</span>);
<span class='comment'>// Existing key (take)</span>
<span class='kw'>match</span> <span class='ident'>map</span>.<span class='ident'>entry</span>(<span class='number'>3</span>) {
<span class='ident'>Vacant</span>(_) <span class='op'>=></span> <span class='macro'>unreachable</span><span class='macro'>!</span>(),
<span class='ident'>Occupied</span>(<span class='ident'>view</span>) <span class='op'>=></span> {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>view</span>.<span class='ident'>remove</span>(), <span class='number'>30</span>);
}
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>3</span>), <span class='prelude-val'>None</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>5</span>);
<span class='comment'>// Inexistent key (insert)</span>
<span class='kw'>match</span> <span class='ident'>map</span>.<span class='ident'>entry</span>(<span class='number'>10</span>) {
<span class='ident'>Occupied</span>(_) <span class='op'>=></span> <span class='macro'>unreachable</span><span class='macro'>!</span>(),
<span class='ident'>Vacant</span>(<span class='ident'>view</span>) <span class='op'>=></span> {
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='op'>*</span><span class='ident'>view</span>.<span class='ident'>insert</span>(<span class='number'>1000</span>), <span class='number'>1000</span>);
}
}
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>get</span>(<span class='kw-2'>&</span><span class='number'>10</span>).<span class='ident'>unwrap</span>(), <span class='kw-2'>&</span><span class='number'>1000</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>map</span>.<span class='ident'>len</span>(), <span class='number'>6</span>);
}
<span class='attribute'>#[<span class='ident'>test</span>]</span>
<span class='kw'>fn</span> <span class='ident'>test_extend_ref</span>() {
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>a</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>a</span>.<span class='ident'>insert</span>(<span class='number'>1</span>, <span class='string'>"one"</span>);
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>VecMap</span>::<span class='ident'>new</span>();
<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>2</span>, <span class='string'>"two"</span>);
<span class='ident'>b</span>.<span class='ident'>insert</span>(<span class='number'>3</span>, <span class='string'>"three"</span>);
<span class='ident'>a</span>.<span class='ident'>extend</span>(<span class='kw-2'>&</span><span class='ident'>b</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>.<span class='ident'>len</span>(), <span class='number'>3</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='kw-2'>&</span><span class='number'>1</span>], <span class='string'>"one"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='kw-2'>&</span><span class='number'>2</span>], <span class='string'>"two"</span>);
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>a</span>[<span class='kw-2'>&</span><span class='number'>3</span>], <span class='string'>"three"</span>);
}
}
</pre>
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