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Added ExactSizeIterator support. #26

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Merged
merged 1 commit into from
Aug 1, 2017
Merged

Added ExactSizeIterator support. #26

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37 changes: 37 additions & 0 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1197,6 +1197,12 @@ impl<'a, K, V> DoubleEndedIterator for Keys<'a, K, V> {
}
}

impl<'a, K, V> ExactSizeIterator for Keys<'a, K, V> {
fn len(&self) -> usize {
self.iter.len()
}
}

pub struct Values<'a, K: 'a, V: 'a> {
iter: SliceIter<'a, Bucket<K, V>>,
}
Expand Down Expand Up @@ -1231,6 +1237,12 @@ impl<'a, K, V> DoubleEndedIterator for Values<'a, K, V> {
}
}

impl<'a, K, V> ExactSizeIterator for Values<'a, K, V> {
fn len(&self) -> usize {
self.iter.len()
}
}

pub struct ValuesMut<'a, K: 'a, V: 'a> {
iter: SliceIterMut<'a, Bucket<K, V>>,
}
Expand Down Expand Up @@ -1265,6 +1277,12 @@ impl<'a, K, V> DoubleEndedIterator for ValuesMut<'a, K, V> {
}
}

impl<'a, K, V> ExactSizeIterator for ValuesMut<'a, K, V> {
fn len(&self) -> usize {
self.iter.len()
}
}

pub struct Iter<'a, K: 'a, V: 'a> {
iter: SliceIter<'a, Bucket<K, V>>,
}
Expand Down Expand Up @@ -1299,6 +1317,12 @@ impl<'a, K, V> DoubleEndedIterator for Iter<'a, K, V> {
}
}

impl<'a, K, V> ExactSizeIterator for Iter<'a, K, V> {
fn len(&self) -> usize {
self.iter.len()
}
}

pub struct IterMut<'a, K: 'a, V: 'a> {
iter: SliceIterMut<'a, Bucket<K, V>>,
}
Expand Down Expand Up @@ -1333,6 +1357,12 @@ impl<'a, K, V> DoubleEndedIterator for IterMut<'a, K, V> {
}
}

impl<'a, K, V> ExactSizeIterator for IterMut<'a, K, V> {
fn len(&self) -> usize {
self.iter.len()
}
}

pub struct IntoIter<K, V> {
iter: VecIntoIter<Bucket<K, V>>,
}
Expand Down Expand Up @@ -1367,6 +1397,13 @@ impl<'a, K, V> DoubleEndedIterator for IntoIter<K, V> {
}
}

impl<K, V> ExactSizeIterator for IntoIter<K, V> {
fn len(&self) -> usize {
self.iter.len()
}
}


impl<'a, K, V, S> IntoIterator for &'a OrderMap<K, V, S>
where K: Hash + Eq,
S: BuildHasher,
Expand Down