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binary_heap: Forward ExactSizeIterator::is_empty

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This commit is contained in:
Ulrik Sverdrup 2016-12-03 22:44:57 +01:00
parent 343b4c321d
commit 28852c3c7c
1 changed files with 15 additions and 3 deletions
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18
src/libcollections/binary_heap.rs
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@ -986,7 +986,11 @@ impl<'a, T> DoubleEndedIterator for Iter<'a, T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<'a, T> ExactSizeIterator for Iter<'a, T> {}
impl<'a, T> ExactSizeIterator for Iter<'a, T> {
fn is_empty(&self) -> bool {
self.iter.is_empty()
}
}
#[unstable(feature = "fused", issue = "35602")]
impl<'a, T> FusedIterator for Iter<'a, T> {}
@ -1022,7 +1026,11 @@ impl<T> DoubleEndedIterator for IntoIter<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> ExactSizeIterator for IntoIter<T> {}
impl<T> ExactSizeIterator for IntoIter<T> {
fn is_empty(&self) -> bool {
self.iter.is_empty()
}
}
#[unstable(feature = "fused", issue = "35602")]
impl<T> FusedIterator for IntoIter<T> {}
@ -1057,7 +1065,11 @@ impl<'a, T: 'a> DoubleEndedIterator for Drain<'a, T> {
}
#[stable(feature = "drain", since = "1.6.0")]
impl<'a, T: 'a> ExactSizeIterator for Drain<'a, T> {}
impl<'a, T: 'a> ExactSizeIterator for Drain<'a, T> {
fn is_empty(&self) -> bool {
self.iter.is_empty()
}
}
#[unstable(feature = "fused", issue = "35602")]
impl<'a, T: 'a> FusedIterator for Drain<'a, T> {}