1.26.0[−][src]Trait std::iter::FusedIterator
pub trait FusedIterator: Iterator { }
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 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<'a, P> FusedIterator for std::str::RSplitN<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, T> FusedIterator for std::slice::IterMut<'a, T>impl FusedIterator for std::char::EscapeDefaultimpl<I, P> FusedIterator for SkipWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a, P> FusedIterator for Matches<'a, P> where
P: Pattern<'a>,impl<I> FusedIterator for Skip<I> where
I: FusedIterator,impl<'a> FusedIterator for SplitWhitespace<'a>impl<'a, P> FusedIterator for MatchIndices<'a, P> where
P: Pattern<'a>,impl<I, P> FusedIterator for Filter<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a> FusedIterator for EncodeUtf16<'a>impl<'a, P> FusedIterator for std::str::RSplit<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, P> FusedIterator for std::str::SplitN<'a, P> where
P: Pattern<'a>,impl FusedIterator for EscapeDebugimpl<'a> FusedIterator for Bytes<'a>impl<'a, P> FusedIterator for RMatches<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<T> FusedIterator for Empty<T>impl FusedIterator for EscapeUnicodeimpl<'a> FusedIterator for CharIndices<'a>impl<'a, T> FusedIterator for std::slice::Iter<'a, T>impl<'a, T, P> FusedIterator for std::slice::SplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T> FusedIterator for ExactChunks<'a, T>impl<T> FusedIterator for std::result::IntoIter<T>impl<A> FusedIterator for RangeFrom<A> where
A: Step,impl<'a, T> FusedIterator for std::result::IterMut<'a, T>impl<I> FusedIterator for Cycle<I> where
I: Clone + Iterator,impl<'a, T, P> FusedIterator for SplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<A> FusedIterator for std::option::IntoIter<A>impl<'a, T, P> FusedIterator for std::slice::Split<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Peekable<I> where
I: FusedIterator,impl<'a, T, P> FusedIterator for std::slice::RSplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<A> FusedIterator for Repeat<A> where
A: Clone,impl<'a> FusedIterator for Chars<'a>impl<'a, T> FusedIterator for ChunksMut<'a, T>impl<I, F> FusedIterator for Inspect<I, F> where
F: FnMut(&<I as Iterator>::Item),
I: FusedIterator,impl<I, P> FusedIterator for TakeWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a> FusedIterator for SplitAsciiWhitespace<'a>impl<A, B> FusedIterator for Chain<A, B> where
A: FusedIterator,
B: FusedIterator<Item = <A as Iterator>::Item>,impl<B, I, F> FusedIterator for FilterMap<I, F> where
F: FnMut(<I as Iterator>::Item) -> Option<B>,
I: FusedIterator,impl<I> FusedIterator for Take<I> where
I: FusedIterator,impl<'a, I, T> FusedIterator for Cloned<I> where
I: FusedIterator<Item = &'a T>,
T: 'a + Clone,impl<T> FusedIterator for Once<T>impl<'a, T> FusedIterator for Chunks<'a, T>impl<A, B> FusedIterator for Zip<A, B> where
A: FusedIterator,
B: FusedIterator,impl<'a, I> FusedIterator for &'a mut I where
I: FusedIterator + ?Sized,impl FusedIterator for ToUppercaseimpl<I> FusedIterator for Rev<I> where
I: FusedIterator + DoubleEndedIterator,impl FusedIterator for ToLowercaseimpl<'a, P> FusedIterator for RMatchIndices<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl FusedIterator for std::ascii::EscapeDefaultimpl<'a> FusedIterator for Lines<'a>impl<'a, A> FusedIterator for std::option::IterMut<'a, A>impl<'a, P> FusedIterator for RSplitTerminator<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, T> FusedIterator for Windows<'a, T>impl<'a, T> FusedIterator for ExactChunksMut<'a, T>impl<I, U> FusedIterator for Flatten<I> where
I: FusedIterator,
U: Iterator,
<I as Iterator>::Item: IntoIterator,
<<I as Iterator>::Item as IntoIterator>::IntoIter == U,
<<I as Iterator>::Item as IntoIterator>::Item == <U as Iterator>::Item,impl<I> FusedIterator for Fuse<I> where
I: Iterator,impl<'a, P> FusedIterator for std::str::Split<'a, P> where
P: Pattern<'a>,impl<'a, A> FusedIterator for std::option::Iter<'a, A>impl<A> FusedIterator for std::ops::Range<A> where
A: Step,impl<A> FusedIterator for RangeInclusive<A> where
A: Step,impl<'a, T, P> FusedIterator for SplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Enumerate<I> where
I: FusedIterator,impl<'a, P> FusedIterator for SplitTerminator<'a, P> where
P: Pattern<'a>,impl<'a, T, P> FusedIterator for std::slice::RSplit<'a, T, P> where
P: FnMut(&T) -> bool,impl<B, I, F> FusedIterator for Map<I, F> where
F: FnMut(<I as Iterator>::Item) -> B,
I: FusedIterator,impl<A, F> FusedIterator for RepeatWith<F> where
F: FnMut() -> A,impl<I, U, F> FusedIterator for FlatMap<I, U, F> where
F: FnMut(<I as Iterator>::Item) -> U,
I: FusedIterator,
U: IntoIterator,impl<'a, T, P> FusedIterator for RSplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a> FusedIterator for LinesAny<'a>impl<'a, T, P> FusedIterator for RSplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T> FusedIterator for std::result::Iter<'a, T>impl<T> FusedIterator for std::collections::btree_set::IntoIter<T>impl<'a, T> FusedIterator for std::collections::vec_deque::Drain<'a, T> where
T: 'a,impl<'a, T> FusedIterator for std::collections::btree_set::Range<'a, T>impl<T> FusedIterator for std::vec::IntoIter<T>impl<T> FusedIterator for std::collections::linked_list::IntoIter<T>impl<'a, T> FusedIterator for std::collections::vec_deque::Iter<'a, T>impl<'a, T> FusedIterator for std::collections::linked_list::Iter<'a, T>impl<'a, K, V> FusedIterator for std::collections::btree_map::Keys<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::btree_map::ValuesMut<'a, K, V>impl<'a, T> FusedIterator for std::collections::binary_heap::Iter<'a, T>impl<'a, T> FusedIterator for std::collections::btree_set::Difference<'a, T> where
T: Ord,impl<'a, T> FusedIterator for std::collections::btree_set::Intersection<'a, T> where
T: Ord,impl<'a, T> FusedIterator for std::collections::btree_set::SymmetricDifference<'a, T> where
T: Ord,impl<'a, K, V> FusedIterator for std::collections::btree_map::Range<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::btree_map::Values<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::btree_map::Iter<'a, K, V>impl<'a> FusedIterator for std::string::Drain<'a>impl<I> FusedIterator for Box<I> where
I: FusedIterator + ?Sized,impl<'a, T> FusedIterator for std::collections::btree_set::Iter<'a, T>impl<'a, T> FusedIterator for std::collections::linked_list::IterMut<'a, T>impl<K, V> FusedIterator for std::collections::btree_map::IntoIter<K, V>impl<'a, K, V> FusedIterator for std::collections::btree_map::IterMut<'a, K, V>impl<'a, T> FusedIterator for std::collections::vec_deque::IterMut<'a, T>impl<'a, T> FusedIterator for std::vec::Drain<'a, T>impl<T> FusedIterator for std::collections::binary_heap::IntoIter<T>impl<T> FusedIterator for std::collections::vec_deque::IntoIter<T>impl<'a, T> FusedIterator for std::collections::binary_heap::Drain<'a, T> where
T: 'a,impl<'a, T> FusedIterator for std::collections::btree_set::Union<'a, T> where
T: Ord,impl<'a, K, V> FusedIterator for RangeMut<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::hash_map::Iter<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::hash_map::IterMut<'a, K, V>impl<K, V> FusedIterator for std::collections::hash_map::IntoIter<K, V>impl<'a, K, V> FusedIterator for std::collections::hash_map::Keys<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::hash_map::Values<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::hash_map::ValuesMut<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::hash_map::Drain<'a, K, V>impl<'a, K> FusedIterator for std::collections::hash_set::Iter<'a, K>impl<K> FusedIterator for std::collections::hash_set::IntoIter<K>impl<'a, K> FusedIterator for std::collections::hash_set::Drain<'a, K>impl<'a, T, S> FusedIterator for std::collections::hash_set::Intersection<'a, T, S> where
T: Eq + Hash,
S: BuildHasher,impl<'a, T, S> FusedIterator for std::collections::hash_set::Difference<'a, T, S> where
T: Eq + Hash,
S: BuildHasher,impl<'a, T, S> FusedIterator for std::collections::hash_set::SymmetricDifference<'a, T, S> where
T: Eq + Hash,
S: BuildHasher,impl<'a, T, S> FusedIterator for std::collections::hash_set::Union<'a, T, S> where
T: Eq + Hash,
S: BuildHasher,impl<'a> FusedIterator for std::path::Iter<'a>impl<'a> FusedIterator for Components<'a>impl<'a> FusedIterator for Ancestors<'a>