diff options
Diffstat (limited to 'library/alloc/src/collections/binary_heap.rs')
| -rw-r--r-- | library/alloc/src/collections/binary_heap.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/library/alloc/src/collections/binary_heap.rs b/library/alloc/src/collections/binary_heap.rs index 9bded6c0f1c..a73eeac6115 100644 --- a/library/alloc/src/collections/binary_heap.rs +++ b/library/alloc/src/collections/binary_heap.rs @@ -512,6 +512,7 @@ impl<T: Ord> BinaryHeap<T> { /// let vec = heap.into_sorted_vec(); /// assert_eq!(vec, [1, 2, 3, 4, 5, 6, 7]); /// ``` + #[must_use = "`self` will be dropped if the result is not used"] #[stable(feature = "binary_heap_extras_15", since = "1.5.0")] pub fn into_sorted_vec(mut self) -> Vec<T> { let mut end = self.len(); @@ -850,7 +851,6 @@ impl<T> BinaryHeap<T> { /// /// assert_eq!(heap.into_iter_sorted().take(2).collect::<Vec<_>>(), vec![5, 4]); /// ``` - #[must_use = "`self` will be dropped if the result is not used"] #[unstable(feature = "binary_heap_into_iter_sorted", issue = "59278")] pub fn into_iter_sorted(self) -> IntoIterSorted<T> { IntoIterSorted { inner: self } @@ -877,6 +877,7 @@ impl<T> BinaryHeap<T> { /// # Time complexity /// /// Cost is *O*(1) in the worst case. + #[must_use] #[stable(feature = "rust1", since = "1.0.0")] pub fn peek(&self) -> Option<&T> { self.data.get(0) @@ -894,6 +895,7 @@ impl<T> BinaryHeap<T> { /// assert!(heap.capacity() >= 100); /// heap.push(4); /// ``` + #[must_use] #[stable(feature = "rust1", since = "1.0.0")] pub fn capacity(&self) -> usize { self.data.capacity() @@ -1203,6 +1205,7 @@ impl<T> Drop for Hole<'_, T> { /// documentation for more. /// /// [`iter`]: BinaryHeap::iter +#[must_use = "iterators are lazy and do nothing unless consumed"] #[stable(feature = "rust1", since = "1.0.0")] pub struct Iter<'a, T: 'a> { iter: slice::Iter<'a, T>, @@ -1337,6 +1340,7 @@ impl<I> AsIntoIter for IntoIter<I> { } } +#[must_use = "iterators are lazy and do nothing unless consumed"] #[unstable(feature = "binary_heap_into_iter_sorted", issue = "59278")] #[derive(Clone, Debug)] pub struct IntoIterSorted<T> { |