Trait std::iter::FusedIterator
[−]
[src]
pub trait FusedIterator: Iterator { }Unstable (
fused #35602)An iterator that always continues to yield None when exhausted.
Calling next on a fused iterator that has returned None once is guaranteed
to return None again. This trait is should be implemented by all iterators
that behave this way because it allows for some significant optimizations.
Note: In general, you should not use FusedIterator in generic bounds if
you need a fused iterator. Instead, you should just call Iterator::fuse()
on the iterator. If the iterator is already fused, the additional Fuse
wrapper will be a no-op with no performance penalty.
Implementors
impl<I> FusedIterator for Box<I> where I: FusedIterator + ?Sizedimpl<I> FusedIterator for Utf16Encoder<I> where I: FusedIterator<Item=char>impl<'a> FusedIterator for SplitWhitespace<'a>impl FusedIterator for ToLowercaseimpl FusedIterator for ToUppercaseimpl<'a, T> FusedIterator for Iter<'a, T>impl<T> FusedIterator for IntoIter<T>impl<'a, T> FusedIterator for Drain<'a, T> where T: 'aimpl<'a, K, V> FusedIterator for Iter<'a, K, V>impl<'a, K, V> FusedIterator for IterMut<'a, K, V>impl<K, V> FusedIterator for IntoIter<K, V>impl<'a, K, V> FusedIterator for Keys<'a, K, V>impl<'a, K, V> FusedIterator for Values<'a, K, V>impl<'a, K, V> FusedIterator for ValuesMut<'a, K, V>impl<'a, K, V> FusedIterator for Range<'a, K, V>impl<'a, K, V> FusedIterator for RangeMut<'a, K, V>impl<'a, T> FusedIterator for Iter<'a, T>impl<T> FusedIterator for IntoIter<T>impl<'a, T> FusedIterator for Range<'a, T>impl<'a, T> FusedIterator for Difference<'a, T> where T: Ordimpl<'a, T> FusedIterator for SymmetricDifference<'a, T> where T: Ordimpl<'a, T> FusedIterator for Intersection<'a, T> where T: Ordimpl<'a, T> FusedIterator for Union<'a, T> where T: Ordimpl<E> FusedIterator for Iter<E> where E: CLikeimpl<'a, T> FusedIterator for Iter<'a, T>impl<'a, T> FusedIterator for IterMut<'a, T>impl<T> FusedIterator for IntoIter<T>impl<'a> FusedIterator for EncodeUtf16<'a>impl<'a> FusedIterator for Drain<'a>impl<T> FusedIterator for IntoIter<T>impl<'a, T> FusedIterator for Drain<'a, T>impl<'a, T> FusedIterator for Iter<'a, T>impl<'a, T> FusedIterator for IterMut<'a, T>impl<T> FusedIterator for IntoIter<T>impl<'a, T> FusedIterator for Drain<'a, T> where T: 'aimpl FusedIterator for EscapeUnicodeimpl FusedIterator for EscapeDefaultimpl FusedIterator for EscapeDebugimpl<I> FusedIterator for DecodeUtf8<I> where I: FusedIterator<Item=u8>impl<A> FusedIterator for StepBy<A, RangeFrom<A>> where A: Clone, &'a A: Add<&'a A>, &'a A::Output == Aimpl<A> FusedIterator for StepBy<A, Range<A>> where A: Clone + Stepimpl<A> FusedIterator for StepBy<A, RangeInclusive<A>> where A: Clone + Stepimpl<A> FusedIterator for Range<A> where A: Step, &'a A: Add<&'a A>, &'a A::Output == Aimpl<A> FusedIterator for RangeFrom<A> where A: Step, &'a A: Add<&'a A>, &'a A::Output == Aimpl<A> FusedIterator for RangeInclusive<A> where A: Step, &'a A: Add<&'a A>, &'a A::Output == Aimpl<A> FusedIterator for Repeat<A> where A: Cloneimpl<T> FusedIterator for Empty<T>impl<T> FusedIterator for Once<T>impl<'a, I> FusedIterator for &'a mut I where I: FusedIterator + ?Sizedimpl<I> FusedIterator for Rev<I> where I: FusedIterator + DoubleEndedIteratorimpl<'a, I, T> FusedIterator for Cloned<I> where I: FusedIterator<Item=&'a T>, T: 'a + Cloneimpl<I> FusedIterator for Cycle<I> where I: Clone + Iteratorimpl<A, B> FusedIterator for Chain<A, B> where A: FusedIterator, B: FusedIterator<Item=A::Item>impl<A, B> FusedIterator for Zip<A, B> where A: FusedIterator, B: FusedIteratorimpl<B, I, F> FusedIterator for Map<I, F> where F: FnMut(I::Item) -> B, I: FusedIteratorimpl<I, P> FusedIterator for Filter<I, P> where I: FusedIterator, P: FnMut(&I::Item) -> boolimpl<B, I, F> FusedIterator for FilterMap<I, F> where F: FnMut(I::Item) -> Option<B>, I: FusedIteratorimpl<I> FusedIterator for Enumerate<I> where I: FusedIteratorimpl<I> FusedIterator for Peekable<I> where I: FusedIteratorimpl<I, P> FusedIterator for SkipWhile<I, P> where I: FusedIterator, P: FnMut(&I::Item) -> boolimpl<I, P> FusedIterator for TakeWhile<I, P> where I: FusedIterator, P: FnMut(&I::Item) -> boolimpl<I> FusedIterator for Skip<I> where I: FusedIteratorimpl<I> FusedIterator for Take<I> where I: FusedIteratorimpl<B, I, St, F> FusedIterator for Scan<I, St, F> where F: FnMut(&mut St, I::Item) -> Option<B>, I: FusedIteratorimpl<I, U, F> FusedIterator for FlatMap<I, U, F> where F: FnMut(I::Item) -> U, I: FusedIterator, U: IntoIteratorimpl<I> FusedIterator for Fuse<I> where I: Iteratorimpl<I, F> FusedIterator for Inspect<I, F> where F: FnMut(&I::Item) -> (), I: FusedIteratorimpl<'a, A> FusedIterator for Iter<'a, A>impl<'a, A> FusedIterator for IterMut<'a, A>impl<A> FusedIterator for IntoIter<A>impl<'a, T> FusedIterator for Iter<'a, T>impl<'a, T> FusedIterator for IterMut<'a, T>impl<T> FusedIterator for IntoIter<T>impl<'a, T> FusedIterator for Iter<'a, T>impl<'a, T> FusedIterator for IterMut<'a, T>impl<'a, T, P> FusedIterator for Split<'a, T, P> where P: FnMut(&T) -> boolimpl<'a, T, P> FusedIterator for SplitMut<'a, T, P> where P: FnMut(&T) -> boolimpl<'a, T> FusedIterator for Windows<'a, T>impl<'a, T> FusedIterator for Chunks<'a, T>impl<'a, T> FusedIterator for ChunksMut<'a, T>impl<'a> FusedIterator for Chars<'a>impl<'a> FusedIterator for CharIndices<'a>impl<'a> FusedIterator for Bytes<'a>impl<'a> FusedIterator for Lines<'a>impl<'a> FusedIterator for LinesAny<'a>impl<'a, T, P> FusedIterator for SplitN<'a, T, P> where P: FnMut(&T) -> boolimpl<'a, T, P> FusedIterator for RSplitN<'a, T, P> where P: FnMut(&T) -> boolimpl<'a, T, P> FusedIterator for SplitNMut<'a, T, P> where P: FnMut(&T) -> boolimpl<'a, T, P> FusedIterator for RSplitNMut<'a, T, P> where P: FnMut(&T) -> boolimpl<'a, P> FusedIterator for Split<'a, P> where P: Pattern<'a>impl<'a, P> FusedIterator for RSplit<'a, P> where P: Pattern<'a>, P::Searcher: ReverseSearcher<'a>impl<'a, P> FusedIterator for SplitTerminator<'a, P> where P: Pattern<'a>impl<'a, P> FusedIterator for RSplitTerminator<'a, P> where P: Pattern<'a>, P::Searcher: ReverseSearcher<'a>impl<'a, P> FusedIterator for SplitN<'a, P> where P: Pattern<'a>impl<'a, P> FusedIterator for RSplitN<'a, P> where P: Pattern<'a>, P::Searcher: ReverseSearcher<'a>impl<'a, P> FusedIterator for MatchIndices<'a, P> where P: Pattern<'a>impl<'a, P> FusedIterator for RMatchIndices<'a, P> where P: Pattern<'a>, P::Searcher: ReverseSearcher<'a>impl<'a, P> FusedIterator for Matches<'a, P> where P: Pattern<'a>impl<'a, P> FusedIterator for RMatches<'a, P> where P: Pattern<'a>, P::Searcher: ReverseSearcher<'a>impl FusedIterator for EscapeDefaultimpl<'a, K, V> FusedIterator for Iter<'a, K, V>impl<'a, K, V> FusedIterator for IterMut<'a, K, V>impl<K, V> FusedIterator for IntoIter<K, V>impl<'a, K, V> FusedIterator for Keys<'a, K, V>impl<'a, K, V> FusedIterator for Values<'a, K, V>impl<'a, K, V> FusedIterator for ValuesMut<'a, K, V>impl<'a, K, V> FusedIterator for Drain<'a, K, V>impl<'a, K> FusedIterator for Iter<'a, K>impl<K> FusedIterator for IntoIter<K>impl<'a, K> FusedIterator for Drain<'a, K>impl<'a, T, S> FusedIterator for Intersection<'a, T, S> where T: Eq + Hash, S: BuildHasherimpl<'a, T, S> FusedIterator for Difference<'a, T, S> where T: Eq + Hash, S: BuildHasherimpl<'a, T, S> FusedIterator for SymmetricDifference<'a, T, S> where T: Eq + Hash, S: BuildHasherimpl<'a, T, S> FusedIterator for Union<'a, T, S> where T: Eq + Hash, S: BuildHasherimpl<'a> FusedIterator for Iter<'a>impl<'a> FusedIterator for Components<'a>