fn size_hint(&self) -> (uint, Option<uint>) { self.iter.size_hint() }
}
+impl<'a, T> DoubleEndedIterator<&'a T> for Items<'a, T> {
+ #[inline]
+ fn next_back(&mut self) -> Option<(&'a T)> { self.iter.next_back() }
+}
+
+impl<'a, T> ExactSize<&'a T> for Items<'a, T> {}
+
/// An iterator that moves out of a `BinaryHeap`.
pub struct MoveItems<T> {
iter: vec::MoveItems<T>,
}
}
+ #[test]
+ fn test_iterator_reverse() {
+ let data = vec!(5i, 9, 3);
+ let iterout = vec!(3i, 5, 9);
+ let pq = BinaryHeap::from_vec(data);
+
+ let v: Vec<int> = pq.iter().rev().map(|&x| x).collect();
+ assert_eq!(v, iterout);
+ }
+
#[test]
fn test_move_iter() {
let data = vec!(5i, 9, 3);