1.0.0[][src]Struct nom::lib::std::ops::Range

pub struct Range<Idx> {
    pub start: Idx,
    pub end: Idx,
}

A (half-open) range bounded inclusively below and exclusively above (start..end).

The Range start..end contains all values with x >= start and x < end. It is empty unless start < end.

Examples

assert_eq!((3..5), std::ops::Range { start: 3, end: 5 });
assert_eq!(3 + 4 + 5, (3..6).sum());

let arr = ['a', 'b', 'c', 'd'];
assert_eq!(arr[ .. ], ['a', 'b', 'c', 'd']);
assert_eq!(arr[ ..3], ['a', 'b', 'c',    ]);
assert_eq!(arr[1.. ], [     'b', 'c', 'd']);
assert_eq!(arr[1..3], [     'b', 'c'     ]);  // Range

Fields

start: Idx

The lower bound of the range (inclusive).

end: Idx

The upper bound of the range (exclusive).

Methods

impl<Idx> Range<Idx> where
    Idx: PartialOrd<Idx>, 
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pub fn contains<U>(&self, item: &U) -> bool where
    Idx: PartialOrd<U>,
    U: PartialOrd<Idx> + ?Sized
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🔬 This is a nightly-only experimental API. (range_contains)

recently added as per RFC

Returns true if item is contained in the range.

Examples

#![feature(range_contains)]

use std::f32;

assert!(!(3..5).contains(&2));
assert!( (3..5).contains(&3));
assert!( (3..5).contains(&4));
assert!(!(3..5).contains(&5));

assert!(!(3..3).contains(&3));
assert!(!(3..2).contains(&3));

assert!( (0.0..1.0).contains(&0.5));
assert!(!(0.0..1.0).contains(&f32::NAN));
assert!(!(0.0..f32::NAN).contains(&0.5));
assert!(!(f32::NAN..1.0).contains(&0.5));

pub fn is_empty(&self) -> bool
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🔬 This is a nightly-only experimental API. (range_is_empty)

recently added

Returns true if the range contains no items.

Examples

#![feature(range_is_empty)]

assert!(!(3..5).is_empty());
assert!( (3..3).is_empty());
assert!( (3..2).is_empty());

The range is empty if either side is incomparable:

#![feature(range_is_empty)]

use std::f32::NAN;
assert!(!(3.0..5.0).is_empty());
assert!( (3.0..NAN).is_empty());
assert!( (NAN..5.0).is_empty());

Trait Implementations

impl<Idx> Clone for Range<Idx> where
    Idx: Clone
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source. Read more

impl IndexMut<Range<usize>> for str
1.3.0
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Implements mutable substring slicing with syntax &mut self[begin .. end].

Returns a mutable slice of the given string from the byte range [begin..end).

This operation is O(1).

Panics

Panics if begin or end does not point to the starting byte offset of a character (as defined by is_char_boundary). Requires that begin <= end and end <= len where len is the length of the string.

impl Index<Range<usize>> for str
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Implements substring slicing with syntax &self[begin .. end].

Returns a slice of the given string from the byte range [begin..end).

This operation is O(1).

Panics

Panics if begin or end does not point to the starting byte offset of a character (as defined by is_char_boundary). Requires that begin <= end and end <= len where len is the length of the string.

Examples

let s = "Löwe 老虎 Léopard";
assert_eq!(&s[0 .. 1], "L");

assert_eq!(&s[1 .. 9], "öwe 老");

// these will panic:
// byte 2 lies within `ö`:
// &s[2 ..3];

// byte 8 lies within `老`
// &s[1 .. 8];

// byte 100 is outside the string
// &s[3 .. 100];

type Output = str

The returned type after indexing.

impl<Idx> Eq for Range<Idx> where
    Idx: Eq
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impl<Idx> PartialEq<Range<Idx>> for Range<Idx> where
    Idx: PartialEq<Idx>, 
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impl TrustedLen for Range<i32>
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impl TrustedLen for Range<i64>
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impl TrustedLen for Range<u8>
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impl TrustedLen for Range<isize>
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impl TrustedLen for Range<i8>
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impl TrustedLen for Range<u32>
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impl TrustedLen for Range<u16>
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impl TrustedLen for Range<usize>
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impl TrustedLen for Range<i16>
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impl TrustedLen for Range<u64>
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impl<Idx> Hash for Range<Idx> where
    Idx: Hash
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fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher
1.3.0
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Feeds a slice of this type into the given [Hasher]. Read more

impl ExactSizeIterator for Range<i8>
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fn len(&self) -> usize
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Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
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🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<i16>
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fn len(&self) -> usize
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Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
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🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<u32>
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fn len(&self) -> usize
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Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
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🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<isize>
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fn len(&self) -> usize
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Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
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🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<i32>
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fn len(&self) -> usize
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Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
[src]

🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<u16>
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fn len(&self) -> usize
[src]

Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
[src]

🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<u8>
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fn len(&self) -> usize
[src]

Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
[src]

🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl ExactSizeIterator for Range<usize>
[src]

fn len(&self) -> usize
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Returns the exact number of times the iterator will iterate. Read more

fn is_empty(&self) -> bool
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🔬 This is a nightly-only experimental API. (exact_size_is_empty)

Returns whether the iterator is empty. Read more

impl<A> DoubleEndedIterator for Range<A> where
    A: Step
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fn nth_back(&mut self, n: usize) -> Option<Self::Item>
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🔬 This is a nightly-only experimental API. (iter_nth_back)

Returns the nth element from the end of the iterator. Read more

fn try_rfold<B, F, R>(&mut self, init: B, f: F) -> R where
    F: FnMut(B, Self::Item) -> R,
    R: Try<Ok = B>, 
1.27.0
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This is the reverse version of [try_fold()]: it takes elements starting from the back of the iterator. Read more

fn rfold<B, F>(self, accum: B, f: F) -> B where
    F: FnMut(B, Self::Item) -> B, 
1.27.0
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An iterator method that reduces the iterator's elements to a single, final value, starting from the back. Read more

fn rfind<P>(&mut self, predicate: P) -> Option<Self::Item> where
    P: FnMut(&Self::Item) -> bool
1.27.0
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Searches for an element of an iterator from the back that satisfies a predicate. Read more

impl<T> RangeBounds<T> for Range<T>
1.28.0
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fn contains<U>(&self, item: &U) -> bool where
    T: PartialOrd<U>,
    U: PartialOrd<T> + ?Sized
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🔬 This is a nightly-only experimental API. (range_contains)

recently added as per RFC

Returns true if item is contained in the range. Read more

impl<'_, T> RangeBounds<T> for Range<&'_ T>
1.28.0
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fn contains<U>(&self, item: &U) -> bool where
    T: PartialOrd<U>,
    U: PartialOrd<T> + ?Sized
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🔬 This is a nightly-only experimental API. (range_contains)

recently added as per RFC

Returns true if item is contained in the range. Read more

impl<Idx> Debug for Range<Idx> where
    Idx: Debug
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impl<A> Iterator for Range<A> where
    A: Step
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type Item = A

The type of the elements being iterated over.

fn count(self) -> usize
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Consumes the iterator, counting the number of iterations and returning it. Read more

Important traits for StepBy<I>
fn step_by(self, step: usize) -> StepBy<Self>
1.28.0
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Creates an iterator starting at the same point, but stepping by the given amount at each iteration. Read more

Important traits for Chain<A, B>
fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter> where
    U: IntoIterator<Item = Self::Item>, 
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Takes two iterators and creates a new iterator over both in sequence. Read more

Important traits for Zip<A, B>
fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter> where
    U: IntoIterator
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'Zips up' two iterators into a single iterator of pairs. Read more

Important traits for Map<I, F>
fn map<B, F>(self, f: F) -> Map<Self, F> where
    F: FnMut(Self::Item) -> B, 
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Takes a closure and creates an iterator which calls that closure on each element. Read more

fn for_each<F>(self, f: F) where
    F: FnMut(Self::Item), 
1.21.0
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Calls a closure on each element of an iterator. Read more

Important traits for Filter<I, P>
fn filter<P>(self, predicate: P) -> Filter<Self, P> where
    P: FnMut(&Self::Item) -> bool
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Creates an iterator which uses a closure to determine if an element should be yielded. Read more

Important traits for FilterMap<I, F>
fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
    F: FnMut(Self::Item) -> Option<B>, 
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Creates an iterator that both filters and maps. Read more

Important traits for Enumerate<I>
fn enumerate(self) -> Enumerate<Self>
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Creates an iterator which gives the current iteration count as well as the next value. Read more

Important traits for Peekable<I>
fn peekable(self) -> Peekable<Self>
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Creates an iterator which can use peek to look at the next element of the iterator without consuming it. Read more

Important traits for SkipWhile<I, P>
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
    P: FnMut(&Self::Item) -> bool
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Creates an iterator that [skip]s elements based on a predicate. Read more

Important traits for TakeWhile<I, P>
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
    P: FnMut(&Self::Item) -> bool
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Creates an iterator that yields elements based on a predicate. Read more

Important traits for Skip<I>
fn skip(self, n: usize) -> Skip<Self>
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Creates an iterator that skips the first n elements. Read more

Important traits for Take<I>
fn take(self, n: usize) -> Take<Self>
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Creates an iterator that yields its first n elements. Read more

Important traits for Scan<I, St, F>
fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where
    F: FnMut(&mut St, Self::Item) -> Option<B>, 
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An iterator adaptor similar to [fold] that holds internal state and produces a new iterator. Read more

Important traits for FlatMap<I, U, F>
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
    F: FnMut(Self::Item) -> U,
    U: IntoIterator
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Creates an iterator that works like map, but flattens nested structure. Read more

Important traits for Flatten<I>
fn flatten(self) -> Flatten<Self> where
    Self::Item: IntoIterator
1.29.0
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Creates an iterator that flattens nested structure. Read more

Important traits for Fuse<I>
fn fuse(self) -> Fuse<Self>
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Creates an iterator which ends after the first [None]. Read more

Important traits for Inspect<I, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnMut(&Self::Item), 
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Do something with each element of an iterator, passing the value on. Read more

Important traits for &'_ mut I
fn by_ref(&mut self) -> &mut Self
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Borrows an iterator, rather than consuming it. Read more

#[must_use = "if you really need to exhaust the iterator, consider `.for_each(drop)` instead"]
fn collect<B>(self) -> B where
    B: FromIterator<Self::Item>, 
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Transforms an iterator into a collection. Read more

fn partition<B, F>(self, f: F) -> (B, B) where
    B: Default + Extend<Self::Item>,
    F: FnMut(&Self::Item) -> bool
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Consumes an iterator, creating two collections from it. Read more

fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R where
    F: FnMut(B, Self::Item) -> R,
    R: Try<Ok = B>, 
1.27.0
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An iterator method that applies a function as long as it returns successfully, producing a single, final value. Read more

fn try_for_each<F, R>(&mut self, f: F) -> R where
    F: FnMut(Self::Item) -> R,
    R: Try<Ok = ()>, 
1.27.0
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An iterator method that applies a fallible function to each item in the iterator, stopping at the first error and returning that error. Read more

fn fold<B, F>(self, init: B, f: F) -> B where
    F: FnMut(B, Self::Item) -> B, 
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An iterator method that applies a function, producing a single, final value. Read more

fn all<F>(&mut self, f: F) -> bool where
    F: FnMut(Self::Item) -> bool
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Tests if every element of the iterator matches a predicate. Read more

fn any<F>(&mut self, f: F) -> bool where
    F: FnMut(Self::Item) -> bool
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Tests if any element of the iterator matches a predicate. Read more

fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where
    P: FnMut(&Self::Item) -> bool
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Searches for an element of an iterator that satisfies a predicate. Read more

fn find_map<B, F>(&mut self, f: F) -> Option<B> where
    F: FnMut(Self::Item) -> Option<B>, 
1.30.0
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Applies function to the elements of iterator and returns the first non-none result. Read more

fn position<P>(&mut self, predicate: P) -> Option<usize> where
    P: FnMut(Self::Item) -> bool
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Searches for an element in an iterator, returning its index. Read more

fn rposition<P>(&mut self, predicate: P) -> Option<usize> where
    P: FnMut(Self::Item) -> bool,
    Self: ExactSizeIterator + DoubleEndedIterator
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Searches for an element in an iterator from the right, returning its index. Read more

fn max_by_key<B, F>(self, f: F) -> Option<Self::Item> where
    B: Ord,
    F: FnMut(&Self::Item) -> B, 
1.6.0
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Returns the element that gives the maximum value from the specified function. Read more

fn max_by<F>(self, compare: F) -> Option<Self::Item> where
    F: FnMut(&Self::Item, &Self::Item) -> Ordering
1.15.0
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Returns the element that gives the maximum value with respect to the specified comparison function. Read more

fn min_by_key<B, F>(self, f: F) -> Option<Self::Item> where
    B: Ord,
    F: FnMut(&Self::Item) -> B, 
1.6.0
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Returns the element that gives the minimum value from the specified function. Read more

fn min_by<F>(self, compare: F) -> Option<Self::Item> where
    F: FnMut(&Self::Item, &Self::Item) -> Ordering
1.15.0
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Returns the element that gives the minimum value with respect to the specified comparison function. Read more

Important traits for Rev<I>
fn rev(self) -> Rev<Self> where
    Self: DoubleEndedIterator
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Reverses an iterator's direction. Read more

fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where
    FromA: Default + Extend<A>,
    FromB: Default + Extend<B>,
    Self: Iterator<Item = (A, B)>, 
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Converts an iterator of pairs into a pair of containers. Read more

Important traits for Copied<I>
fn copied<'a, T>(self) -> Copied<Self> where
    Self: Iterator<Item = &'a T>,
    T: 'a + Copy
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🔬 This is a nightly-only experimental API. (iter_copied)

Creates an iterator which copies all of its elements. Read more

Important traits for Cloned<I>
fn cloned<'a, T>(self) -> Cloned<Self> where
    Self: Iterator<Item = &'a T>,
    T: 'a + Clone
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Creates an iterator which [clone]s all of its elements. Read more

Important traits for Cycle<I>
fn cycle(self) -> Cycle<Self> where
    Self: Clone
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Repeats an iterator endlessly. Read more

fn sum<S>(self) -> S where
    S: Sum<Self::Item>, 
1.11.0
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Sums the elements of an iterator. Read more

fn product<P>(self) -> P where
    P: Product<Self::Item>, 
1.11.0
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Iterates over the entire iterator, multiplying all the elements Read more

fn cmp<I>(self, other: I) -> Ordering where
    I: IntoIterator<Item = Self::Item>,
    Self::Item: Ord
1.5.0
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Lexicographically compares the elements of this Iterator with those of another. Read more

fn partial_cmp<I>(self, other: I) -> Option<Ordering> where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 
1.5.0
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Lexicographically compares the elements of this Iterator with those of another. Read more

fn eq<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialEq<<I as IntoIterator>::Item>, 
1.5.0
[src]

Determines if the elements of this Iterator are equal to those of another. Read more

fn ne<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialEq<<I as IntoIterator>::Item>, 
1.5.0
[src]

Determines if the elements of this Iterator are unequal to those of another. Read more

fn lt<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 
1.5.0
[src]

Determines if the elements of this Iterator are lexicographically less than those of another. Read more

fn le<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 
1.5.0
[src]

Determines if the elements of this Iterator are lexicographically less or equal to those of another. Read more

fn gt<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 
1.5.0
[src]

Determines if the elements of this Iterator are lexicographically greater than those of another. Read more

fn ge<I>(self, other: I) -> bool where
    I: IntoIterator,
    Self::Item: PartialOrd<<I as IntoIterator>::Item>, 
1.5.0
[src]

Determines if the elements of this Iterator are lexicographically greater than or equal to those of another. Read more

impl<A> FusedIterator for Range<A> where
    A: Step
1.26.0
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impl<T> SliceIndex<[T]> for Range<usize>
1.15.0
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type Output = [T]

The output type returned by methods.

impl SliceIndex<str> for Range<usize>
1.20.0
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type Output = str

The output type returned by methods.

impl Index<Range<usize>> for String
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type Output = str

The returned type after indexing.

impl IndexMut<Range<usize>> for String
1.3.0
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impl<'a> Slice<Range<usize>> for &'a str
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impl<'a, T> Slice<Range<usize>> for &'a [T]
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impl<'a> Slice<Range<usize>> for CompleteStr<'a>
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impl<'a> Slice<Range<usize>> for CompleteByteSlice<'a>
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impl<T: Slice<Range<usize>>> Slice<Range<usize>> for Input<T>
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Auto Trait Implementations

impl<Idx> Send for Range<Idx> where
    Idx: Send

impl<Idx> Sync for Range<Idx> where
    Idx: Sync

Blanket Implementations

impl<T> From for T
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impl<I> IntoIterator for I where
    I: Iterator
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type Item = <I as Iterator>::Item

The type of the elements being iterated over.

type IntoIter = I

Which kind of iterator are we turning this into?

impl<T, U> Into for T where
    U: From<T>, 
[src]

impl<T> ToOwned for T where
    T: Clone
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type Owned = T

impl<T, U> TryFrom for T where
    T: From<U>, 
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type Error = !

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Borrow for T where
    T: ?Sized
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impl<T> BorrowMut for T where
    T: ?Sized
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> Any for T where
    T: 'static + ?Sized
[src]