Trait 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 optimizing Iterator::fuse().

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 FusedIterator for core::ffi::c_str::Bytes<'_>

impl FusedIterator for std::ascii::EscapeDefault

impl FusedIterator for std::char::EscapeDebug

impl FusedIterator for std::char::EscapeDefault

impl FusedIterator for std::char::EscapeUnicode

impl FusedIterator for ToLowercase

impl FusedIterator for ToUppercase

impl FusedIterator for Incoming<'_>

impl FusedIterator for IntoIncoming

impl FusedIterator for EncodeWide<'_>

Available on Windows only.

impl FusedIterator for Ancestors<'_>

impl FusedIterator for Components<'_>

impl FusedIterator for std::path::Iter<'_>

impl FusedIterator for std::str::Bytes<'_>

impl FusedIterator for CharIndices<'_>

impl FusedIterator for Chars<'_>

impl FusedIterator for EncodeUtf16<'_>

impl FusedIterator for Lines<'_>

impl FusedIterator for LinesAny<'_>

impl FusedIterator for SplitAsciiWhitespace<'_>

impl FusedIterator for SplitWhitespace<'_>

impl FusedIterator for Utf8Chunks<'_>

impl FusedIterator for std::string::Drain<'_>

impl FusedIterator for IntoChars

impl<'a> FusedIterator for Source<'a>

impl<'a> FusedIterator for EscapeAscii<'a>

impl<'a> FusedIterator for std::str::EscapeDebug<'a>

impl<'a> FusedIterator for std::str::EscapeDefault<'a>

impl<'a> FusedIterator for std::str::EscapeUnicode<'a>

impl<'a, I, T> FusedIterator for Cloned<I>

where T: 'a + Clone, I: FusedIterator<Item = &'a T>,

impl<'a, I, T> FusedIterator for Copied<I>

where T: 'a + Copy, I: FusedIterator<Item = &'a T>,

impl<'a, P> FusedIterator for MatchIndices<'a, P>

where P: Pattern,

impl<'a, P> FusedIterator for Matches<'a, P>

where P: Pattern,

impl<'a, P> FusedIterator for RMatchIndices<'a, P>

where P: Pattern, <P as Pattern>::Searcher<'a>: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for RMatches<'a, P>

where P: Pattern, <P as Pattern>::Searcher<'a>: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for std::str::RSplit<'a, P>

where P: Pattern, <P as Pattern>::Searcher<'a>: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for std::str::RSplitN<'a, P>

where P: Pattern, <P as Pattern>::Searcher<'a>: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for RSplitTerminator<'a, P>

where P: Pattern, <P as Pattern>::Searcher<'a>: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for std::str::Split<'a, P>

where P: Pattern,

impl<'a, P> FusedIterator for std::str::SplitInclusive<'a, P>

where P: Pattern,

impl<'a, P> FusedIterator for std::str::SplitN<'a, P>

where P: Pattern,

impl<'a, P> FusedIterator for SplitTerminator<'a, P>

where P: Pattern,

impl<'a, T, P> FusedIterator for ChunkBy<'a, T, P>

where T: 'a, P: FnMut(&T, &T) -> bool,

impl<'a, T, P> FusedIterator for ChunkByMut<'a, T, P>

where T: 'a, P: FnMut(&T, &T) -> bool,

impl<'a, T, P> FusedIterator for std::slice::RSplitN<'a, T, P>

where P: FnMut(&T) -> bool,

impl<'a, T, P> FusedIterator for RSplitNMut<'a, T, P>

where P: FnMut(&T) -> bool,

impl<'a, T, P> FusedIterator for std::slice::SplitN<'a, T, P>

where P: FnMut(&T) -> bool,

impl<'a, T, P> FusedIterator for SplitNMut<'a, T, P>

where P: FnMut(&T) -> bool,

impl<A> FusedIterator for std::ops::Range<A>

where A: Step,

impl<A> FusedIterator for RangeFrom<A>

where A: Step,

impl<A> FusedIterator for RangeInclusive<A>

where A: Step,

impl<A> FusedIterator for std::option::IntoIter<A>

impl<A> FusedIterator for std::option::Iter<'_, A>

impl<A> FusedIterator for std::option::IterMut<'_, A>

impl<A> FusedIterator for IterRange<A>

where A: Step,

impl<A> FusedIterator for IterRangeFrom<A>

where A: Step,

impl<A> FusedIterator for IterRangeInclusive<A>

where A: Step,

impl<A> FusedIterator for Repeat<A>

where A: Clone,

impl<A> FusedIterator for RepeatN<A>

where A: Clone,

impl<A, B> FusedIterator for Chain<A, B>

where A: FusedIterator, B: FusedIterator<Item = <A as Iterator>::Item>,

impl<A, B> FusedIterator for Zip<A, B>

where A: FusedIterator, B: FusedIterator,

impl<A, F> FusedIterator for OnceWith<F>

where F: FnOnce() -> A,

impl<A, F> FusedIterator for RepeatWith<F>

where F: FnMut() -> A,

impl<B, I, F> FusedIterator for FilterMap<I, F>

where I: FusedIterator, F: FnMut(<I as Iterator>::Item) -> Option<B>,

impl<B, I, F> FusedIterator for Map<I, F>

where I: FusedIterator, F: FnMut(<I as Iterator>::Item) -> B,

impl<I> FusedIterator for &mut I

where I: FusedIterator + ?Sized,

impl<I> FusedIterator for DecodeUtf16<I>

where I: Iterator<Item = u16> + FusedIterator,

impl<I> FusedIterator for Cycle<I>

where I: Clone + Iterator,

impl<I> FusedIterator for Enumerate<I>

where I: FusedIterator,

impl<I> FusedIterator for Fuse<I>

where I: Iterator,

impl<I> FusedIterator for Intersperse<I>

where I: FusedIterator, <I as Iterator>::Item: Clone,

impl<I> FusedIterator for Peekable<I>

where I: FusedIterator,

impl<I> FusedIterator for Rev<I>

where I: FusedIterator + DoubleEndedIterator,

impl<I> FusedIterator for Skip<I>

where I: FusedIterator,

impl<I> FusedIterator for Take<I>

where I: FusedIterator,

impl<I, A> FusedIterator for Box<I, A>

where I: FusedIterator + ?Sized, A: Allocator,

impl<I, F> FusedIterator for Inspect<I, F>

where I: FusedIterator, F: FnMut(&<I as Iterator>::Item),

impl<I, F, R, const N: usize> FusedIterator for MapWindows<I, F, N>

where I: Iterator, F: FnMut(&[<I as Iterator>::Item; N]) -> R,

impl<I, G> FusedIterator for IntersperseWith<I, G>

where I: FusedIterator, G: FnMut() -> <I as Iterator>::Item,

impl<I, P> FusedIterator for Filter<I, P>

where I: FusedIterator, P: FnMut(&<I as Iterator>::Item) -> bool,

impl<I, P> FusedIterator for SkipWhile<I, P>

where I: FusedIterator, P: FnMut(&<I as Iterator>::Item) -> bool,

impl<I, P> FusedIterator for TakeWhile<I, P>

where I: FusedIterator, P: FnMut(&<I as Iterator>::Item) -> bool,

impl<I, U> FusedIterator for Flatten<I>

where I: FusedIterator, <I as Iterator>::Item: IntoIterator<IntoIter = U, Item = <U as Iterator>::Item>, U: Iterator,

impl<I, U, F> FusedIterator for FlatMap<I, U, F>

where I: FusedIterator, U: IntoIterator, F: FnMut(<I as Iterator>::Item) -> U,

impl<I, const N: usize> FusedIterator for ArrayChunks<I, N>

where I: FusedIterator,

impl<K> FusedIterator for std::collections::hash_set::Drain<'_, K>

impl<K> FusedIterator for std::collections::hash_set::IntoIter<K>

impl<K> FusedIterator for std::collections::hash_set::Iter<'_, K>

impl<K, F> FusedIterator for std::collections::hash_set::ExtractIf<'_, K, F>

where F: FnMut(&K) -> bool,

impl<K, V> FusedIterator for std::collections::btree_map::Iter<'_, K, V>

impl<K, V> FusedIterator for std::collections::btree_map::IterMut<'_, K, V>

impl<K, V> FusedIterator for std::collections::btree_map::Keys<'_, K, V>

impl<K, V> FusedIterator for std::collections::btree_map::Range<'_, K, V>

impl<K, V> FusedIterator for RangeMut<'_, K, V>

impl<K, V> FusedIterator for std::collections::btree_map::Values<'_, K, V>

impl<K, V> FusedIterator for std::collections::btree_map::ValuesMut<'_, K, V>

impl<K, V> FusedIterator for std::collections::hash_map::Drain<'_, K, V>

impl<K, V> FusedIterator for std::collections::hash_map::IntoIter<K, V>

impl<K, V> FusedIterator for std::collections::hash_map::IntoKeys<K, V>

impl<K, V> FusedIterator for std::collections::hash_map::IntoValues<K, V>

impl<K, V> FusedIterator for std::collections::hash_map::Iter<'_, K, V>

impl<K, V> FusedIterator for std::collections::hash_map::IterMut<'_, K, V>

impl<K, V> FusedIterator for std::collections::hash_map::Keys<'_, K, V>

impl<K, V> FusedIterator for std::collections::hash_map::Values<'_, K, V>

impl<K, V> FusedIterator for std::collections::hash_map::ValuesMut<'_, K, V>

impl<K, V, A> FusedIterator for std::collections::btree_map::IntoIter<K, V, A>

where A: Allocator + Clone,

impl<K, V, A> FusedIterator for std::collections::btree_map::IntoKeys<K, V, A>

where A: Allocator + Clone,

impl<K, V, A> FusedIterator for std::collections::btree_map::IntoValues<K, V, A>

where A: Allocator + Clone,

impl<K, V, F> FusedIterator for std::collections::hash_map::ExtractIf<'_, K, V, F>

where F: FnMut(&K, &mut V) -> bool,

impl<K, V, R, F> FusedIterator for std::collections::btree_map::ExtractIf<'_, K, V, R, F>

where K: PartialOrd, R: RangeBounds<K>, F: FnMut(&K, &mut V) -> bool,

impl<T> FusedIterator for std::collections::binary_heap::Iter<'_, T>

impl<T> FusedIterator for std::collections::btree_set::Iter<'_, T>

impl<T> FusedIterator for std::collections::btree_set::Range<'_, T>

impl<T> FusedIterator for std::collections::btree_set::SymmetricDifference<'_, T>

where T: Ord,

impl<T> FusedIterator for std::collections::btree_set::Union<'_, T>

where T: Ord,

impl<T> FusedIterator for std::collections::linked_list::Iter<'_, T>

impl<T> FusedIterator for std::collections::linked_list::IterMut<'_, T>

impl<T> FusedIterator for std::collections::vec_deque::Iter<'_, T>

impl<T> FusedIterator for std::collections::vec_deque::IterMut<'_, T>

impl<T> FusedIterator for std::result::IntoIter<T>

impl<T> FusedIterator for std::result::Iter<'_, T>

impl<T> FusedIterator for std::result::IterMut<'_, T>

impl<T> FusedIterator for Chunks<'_, T>

impl<T> FusedIterator for ChunksExact<'_, T>

impl<T> FusedIterator for ChunksExactMut<'_, T>

impl<T> FusedIterator for ChunksMut<'_, T>

impl<T> FusedIterator for std::slice::Iter<'_, T>

impl<T> FusedIterator for std::slice::IterMut<'_, T>

impl<T> FusedIterator for RChunks<'_, T>

impl<T> FusedIterator for RChunksExact<'_, T>

impl<T> FusedIterator for RChunksExactMut<'_, T>

impl<T> FusedIterator for RChunksMut<'_, T>

impl<T> FusedIterator for Windows<'_, T>

impl<T> FusedIterator for Empty<T>

impl<T> FusedIterator for Once<T>

impl<T, A> FusedIterator for std::collections::binary_heap::Drain<'_, T, A>

where A: Allocator,

impl<T, A> FusedIterator for DrainSorted<'_, T, A>

where T: Ord, A: Allocator,

impl<T, A> FusedIterator for std::collections::binary_heap::IntoIter<T, A>

where A: Allocator,

impl<T, A> FusedIterator for IntoIterSorted<T, A>

where T: Ord, A: Allocator,

impl<T, A> FusedIterator for std::collections::btree_set::Difference<'_, T, A>

where T: Ord, A: Allocator + Clone,

impl<T, A> FusedIterator for std::collections::btree_set::Intersection<'_, T, A>

where T: Ord, A: Allocator + Clone,

impl<T, A> FusedIterator for std::collections::btree_set::IntoIter<T, A>

where A: Allocator + Clone,

impl<T, A> FusedIterator for std::collections::linked_list::IntoIter<T, A>

where A: Allocator,

impl<T, A> FusedIterator for std::collections::vec_deque::Drain<'_, T, A>

where A: Allocator,

impl<T, A> FusedIterator for std::collections::vec_deque::IntoIter<T, A>

where A: Allocator,

impl<T, A> FusedIterator for std::vec::Drain<'_, T, A>

where A: Allocator,

impl<T, A> FusedIterator for std::vec::IntoIter<T, A>

where A: Allocator,

impl<T, F> FusedIterator for Successors<T, F>

where F: FnMut(&T) -> Option<T>,

impl<T, P> FusedIterator for std::slice::RSplit<'_, T, P>

where P: FnMut(&T) -> bool,

impl<T, P> FusedIterator for RSplitMut<'_, T, P>

where P: FnMut(&T) -> bool,

impl<T, P> FusedIterator for std::slice::Split<'_, T, P>

where P: FnMut(&T) -> bool,

impl<T, P> FusedIterator for std::slice::SplitInclusive<'_, T, P>

where P: FnMut(&T) -> bool,

impl<T, P> FusedIterator for SplitInclusiveMut<'_, T, P>

where P: FnMut(&T) -> bool,

impl<T, P> FusedIterator for SplitMut<'_, T, P>

where P: FnMut(&T) -> bool,

impl<T, R, F, A> FusedIterator for std::collections::btree_set::ExtractIf<'_, T, R, F, A>

where A: Allocator + Clone, T: PartialOrd, R: RangeBounds<T>, F: FnMut(&T) -> bool,

impl<T, S> FusedIterator for std::collections::hash_set::Difference<'_, T, S>

where T: Eq + Hash, S: BuildHasher,

impl<T, S> FusedIterator for std::collections::hash_set::Intersection<'_, T, S>

where T: Eq + Hash, S: BuildHasher,

impl<T, S> FusedIterator for std::collections::hash_set::SymmetricDifference<'_, T, S>

where T: Eq + Hash, S: BuildHasher,

impl<T, S> FusedIterator for std::collections::hash_set::Union<'_, T, S>

where T: Eq + Hash, S: BuildHasher,

impl<T, const N: usize> FusedIterator for std::array::IntoIter<T, N>