Trait std::iter::FusedIterator1.26.0[−][src]

pub trait FusedIterator: Iterator { }

Expand description

一个迭代器，用完后总是继续产生 None。

确保一次返回 None 的融合迭代器上的 next 调用保证再次返回 None。该 trait 应该由以此方式运行的所有迭代器实现，因为它允许优化 Iterator::fuse()。

Note: 通常，如果需要融合的迭代器，则不应在泛型范围内使用 FusedIterator。相反，您应该只在迭代器上调用 Iterator::fuse()。如果迭代器已经融合，则额外的 Fuse 包装器将是无操作的，并且不会降低性能。

Trait std::iter::FusedIterator1.26.0[−][src]

Implementations on Foreign Types

impl<'_, T, P> FusedIterator for SplitInclusive<'_, T, P> where P: FnMut(&T) -> bool,

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

impl<'_, T, P> FusedIterator for SplitInclusiveMut<'_, T, P> where P: FnMut(&T) -> bool,

Implementors

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 Ancestors<'_>

impl FusedIterator for Components<'_>

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

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

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

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

impl<'_, I> FusedIterator for &'_ mut I where I: FusedIterator + ?Sized,

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, F> FusedIterator for std::collections::btree_map::DrainFilter<'_, K, V, F> where F: FnMut(&K, &mut V) -> bool,

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

impl<'_, T> FusedIterator for DrainSorted<'_, T> where T: Ord,

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

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

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

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

impl<'_, T, F> FusedIterator for std::collections::btree_set::DrainFilter<'_, T, F> where F: FnMut(&T) -> bool,

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 SplitMut<'_, T, P> where P: FnMut(&T) -> bool,

impl<'_, T, const N: usize> FusedIterator for ArrayChunks<'_, T, N>

impl<'_, T, const N: usize> FusedIterator for ArrayChunksMut<'_, T, N>

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<'a>,

impl<'a, P> FusedIterator for Matches<'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, P> FusedIterator for RMatches<'a, P> where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for std::str::RSplit<'a, P> where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,

impl<'_, T, P> FusedIterator for SplitInclusive<'_, T, P> where
P: FnMut(&T) -> bool,

impl<'_, T, P> FusedIterator for SplitInclusiveMut<'_, T, P> where
P: FnMut(&T) -> bool,

impl<'_, I> FusedIterator for &'_ mut I where
I: FusedIterator + ?Sized,

impl<'_, K, V, F> FusedIterator for std::collections::btree_map::DrainFilter<'_, K, V, F> where
F: FnMut(&K, &mut V) -> bool,

impl<'_, T> FusedIterator for DrainSorted<'_, T> where
T: Ord,

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

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

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

impl<'_, T, F> FusedIterator for std::collections::btree_set::DrainFilter<'_, T, F> where
F: FnMut(&T) -> bool,

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 SplitMut<'_, T, P> where
P: FnMut(&T) -> bool,

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<'a>,

impl<'a, P> FusedIterator for Matches<'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, P> FusedIterator for RMatches<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'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::RSplitN<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,

impl<'a, P> FusedIterator for RSplitTerminator<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,

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

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

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

impl<'a, P> FusedIterator for SplitTerminator<'a, P> where
P: Pattern<'a>,

impl<'a, T, P> FusedIterator for GroupBy<'a, T, P> where
T: 'a,
P: FnMut(&T, &T) -> bool,

impl<'a, T, P> FusedIterator for GroupByMut<'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 Repeat<A> where
A: Clone,

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

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

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

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

impl<K, F> FusedIterator for std::collections::hash_set::DrainFilter<'_, K, F> where
F: FnMut(&K) -> bool,

impl<K, V, F> FusedIterator for std::collections::hash_map::DrainFilter<'_, K, V, F> where
F: FnMut(&K, &mut V) -> bool,

impl<T> FusedIterator for IntoIterSorted<T> where
T: Ord,

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, 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,