Trait std::iter::FusedIterator 1.26.0[−][src]
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> FusedIterator for CharIndices<'a>impl<'a, T, P> FusedIterator for RSplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Enumerate<I> where
I: FusedIterator,impl<'a, T> FusedIterator for std::result::Iter<'a, T>impl<'a> FusedIterator for Bytes<'a>impl<B, I, F> FusedIterator for Map<I, F> where
F: FnMut(<I as Iterator>::Item) -> B,
I: FusedIterator,impl<'a> FusedIterator for SplitWhitespace<'a>impl<'a, P> FusedIterator for SplitTerminator<'a, P> where
P: Pattern<'a>,impl<A> FusedIterator for RangeFrom<A> where
A: Step,impl<I> FusedIterator for DecodeUtf8<I> where
I: FusedIterator<Item = u8>,impl FusedIterator for std::char::EscapeDefaultimpl<A, F> FusedIterator for RepeatWith<F> where
F: FnMut() -> A,impl<'a> FusedIterator for Chars<'a>impl<I> FusedIterator for Peekable<I> where
I: FusedIterator,impl<T> FusedIterator for Once<T>impl<'a, T> FusedIterator for std::slice::Iter<'a, T>impl<'a> FusedIterator for Lines<'a>impl<'a, T, P> FusedIterator for SplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T, P> FusedIterator for std::slice::RSplit<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, P> FusedIterator for std::str::SplitN<'a, P> where
P: Pattern<'a>,impl<'a, P> FusedIterator for RMatchIndices<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<A> FusedIterator for RangeInclusive<A> where
A: Step,impl<'a, T, P> FusedIterator for RSplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T> FusedIterator for ExactChunks<'a, T>impl FusedIterator for EscapeDebugimpl<A> FusedIterator for std::ops::Range<A> where
A: Step,impl<'a, T> FusedIterator for ExactChunksMut<'a, T>impl FusedIterator for std::ascii::EscapeDefaultimpl<'a, P> FusedIterator for RMatches<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, A> FusedIterator for std::option::IterMut<'a, A>impl<'a, T> FusedIterator for ChunksMut<'a, T>impl<'a, I> FusedIterator for &'a mut I where
I: FusedIterator + ?Sized,impl FusedIterator for ToUppercaseimpl<I, P> FusedIterator for Filter<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a> FusedIterator for LinesAny<'a>impl<I, F> FusedIterator for Inspect<I, F> where
F: FnMut(&<I as Iterator>::Item),
I: FusedIterator,impl<'a, T> FusedIterator for Chunks<'a, T>impl<I> FusedIterator for Rev<I> where
I: FusedIterator + DoubleEndedIterator,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 std::result::IterMut<'a, T>impl<'a, T, P> FusedIterator for std::slice::Split<'a, T, P> where
P: FnMut(&T) -> bool,impl<B, I, F> FusedIterator for FilterMap<I, F> where
F: FnMut(<I as Iterator>::Item) -> Option<B>,
I: FusedIterator,impl<A, B> FusedIterator for Chain<A, B> where
A: FusedIterator,
B: FusedIterator<Item = <A as Iterator>::Item>,impl<'a, P> FusedIterator for std::str::Split<'a, P> where
P: Pattern<'a>,impl<'a, I, T> FusedIterator for Cloned<I> where
I: FusedIterator<Item = &'a T>,
T: 'a + Clone,impl<'a, T> FusedIterator for std::slice::IterMut<'a, T>impl<'a, P> FusedIterator for MatchIndices<'a, P> where
P: Pattern<'a>,impl<I> FusedIterator for Take<I> where
I: FusedIterator,impl FusedIterator for ToLowercaseimpl<A> FusedIterator for std::option::IntoIter<A>impl<'a, T, P> FusedIterator for std::slice::SplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Skip<I> where
I: FusedIterator,impl<I, P> FusedIterator for TakeWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl FusedIterator for EscapeUnicodeimpl<A> FusedIterator for Repeat<A> where
A: Clone,impl<T> FusedIterator for std::result::IntoIter<T>impl<T> FusedIterator for Empty<T>impl<I> FusedIterator for Cycle<I> where
I: Clone + Iterator,impl<I> FusedIterator for Fuse<I> where
I: Iterator,impl<'a, T, P> FusedIterator for std::slice::RSplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, P> FusedIterator for Matches<'a, P> where
P: Pattern<'a>,impl<A, B> FusedIterator for Zip<A, B> where
A: FusedIterator,
B: FusedIterator,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 SplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, P> FusedIterator for std::str::RSplit<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,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<'a, A> FusedIterator for std::option::Iter<'a, A>impl<I, P> FusedIterator for SkipWhile<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::RSplitN<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,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::SymmetricDifference<'a, T> where
T: Ord,impl<'a, T> FusedIterator for std::vec::Drain<'a, T>impl<T> FusedIterator for std::collections::vec_deque::IntoIter<T>impl<'a, K, V> FusedIterator for std::collections::btree_map::Range<'a, K, V>impl<'a, T> FusedIterator for std::collections::linked_list::IterMut<'a, T>impl<'a, T> FusedIterator for std::collections::vec_deque::Iter<'a, T>impl<'a, T> FusedIterator for std::collections::btree_set::Iter<'a, T>impl<'a, T> FusedIterator for std::collections::vec_deque::IterMut<'a, T>impl<'a> FusedIterator for std::string::Drain<'a>impl<'a, T> FusedIterator for std::collections::btree_set::Intersection<'a, T> where
T: Ord,impl<T> FusedIterator for std::collections::linked_list::IntoIter<T>impl<T> FusedIterator for std::collections::binary_heap::IntoIter<T>impl<'a, K, V> FusedIterator for std::collections::btree_map::Keys<'a, K, V>impl<'a, T> FusedIterator for std::collections::btree_set::Union<'a, T> where
T: Ord,impl<'a, T> FusedIterator for std::collections::linked_list::Iter<'a, T>impl<'a, K, V> FusedIterator for std::collections::btree_map::Values<'a, K, V>impl<'a, T> FusedIterator for std::collections::btree_set::Range<'a, T>impl<I> FusedIterator for Box<I> where
I: FusedIterator + ?Sized,impl<'a, K, V> FusedIterator for std::collections::btree_map::IterMut<'a, K, V>impl<'a, T> FusedIterator for std::collections::binary_heap::Drain<'a, T> where
T: 'a,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, K, V> FusedIterator for std::collections::btree_map::Iter<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::btree_map::ValuesMut<'a, K, V>impl<T> FusedIterator for std::vec::IntoIter<T>impl<K, V> FusedIterator for std::collections::btree_map::IntoIter<K, V>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>