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#[macro_export]
macro_rules! indexmap {
(@single $($x:tt)*) => (());
(@count $($rest:expr),*) => (<[()]>::len(&[$(indexmap!(@single $rest)),*]));
($($key:expr => $value:expr,)+) => { indexmap!($($key => $value),+) };
($($key:expr => $value:expr),*) => {
{
let _cap = indexmap!(@count $($key),*);
let mut _map = $crate::IndexMap::with_capacity(_cap);
$(
_map.insert($key, $value);
)*
_map
}
};
}
#[deprecated(note = "renamed to indexmap!{ }")]
#[macro_export]
macro_rules! ordermap {
($($t:tt)*) => { indexmap!($($t)*) }
}
#[macro_export]
macro_rules! indexset {
(@single $($x:tt)*) => (());
(@count $($rest:expr),*) => (<[()]>::len(&[$(indexset!(@single $rest)),*]));
($($value:expr,)+) => { indexset!($($value),+) };
($($value:expr),*) => {
{
let _cap = indexset!(@count $($value),*);
let mut _set = $crate::IndexSet::with_capacity(_cap);
$(
_set.insert($value);
)*
_set
}
};
}
#[deprecated(note = "renamed to indexset!{ }")]
#[macro_export]
macro_rules! orderset {
($($t:tt)*) => { indexset!($($t)*) }
}
macro_rules! iterator_methods {
($map_elt:expr) => {
fn next(&mut self) -> Option<Self::Item> {
self.iter.next().map($map_elt)
}
fn size_hint(&self) -> (usize, Option<usize>) {
self.iter.size_hint()
}
fn count(self) -> usize {
self.iter.len()
}
fn nth(&mut self, n: usize) -> Option<Self::Item> {
self.iter.nth(n).map($map_elt)
}
fn last(mut self) -> Option<Self::Item> {
self.next_back()
}
fn collect<C>(self) -> C
where C: FromIterator<Self::Item>
{
self.iter.map($map_elt).collect()
}
}
}
macro_rules! double_ended_iterator_methods {
($map_elt:expr) => {
fn next_back(&mut self) -> Option<Self::Item> {
self.iter.next_back().map($map_elt)
}
}
}