Trait std::iter::FusedIterator
[−]
[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.
Implementations on Foreign Types
impl<I> FusedIterator for Utf16Encoder<I> where
I: FusedIterator<Item = char>, [src]
I: FusedIterator<Item = char>,
Implementors
impl FusedIterator for ToLowercaseimpl<'a> FusedIterator for SplitWhitespace<'a>impl FusedIterator for ToUppercaseimpl<'a, T> FusedIterator for std::collections::btree_set::Intersection<'a, T> where
T: Ord,impl<'a, T> FusedIterator for std::collections::btree_set::Iter<'a, T>impl<'a> FusedIterator for EncodeUtf16<'a>impl<'a, T> FusedIterator for std::vec::Drain<'a, T>impl<'a, T> FusedIterator for std::collections::vec_deque::IterMut<'a, T>impl<'a, K, V> FusedIterator for std::collections::btree_map::Range<'a, K, V>impl<'a> FusedIterator for std::string::Drain<'a>impl<'a, T> FusedIterator for std::collections::btree_set::Union<'a, T> where
T: Ord,impl<T> FusedIterator for std::collections::linked_list::IntoIter<T>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::Values<'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::linked_list::Iter<'a, T>impl<'a, K, V> FusedIterator for std::collections::btree_map::IterMut<'a, K, V>impl<'a, K, V> FusedIterator for std::collections::btree_map::Keys<'a, K, V>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::binary_heap::Drain<'a, T> where
T: 'a,impl<'a, K, V> FusedIterator for std::collections::btree_map::ValuesMut<'a, K, V>impl<T> FusedIterator for std::collections::binary_heap::IntoIter<T>impl<I> FusedIterator for Box<I> where
I: FusedIterator + ?Sized,impl<'a, K, V> FusedIterator for RangeMut<'a, K, V>impl<'a, T> FusedIterator for std::collections::vec_deque::Iter<'a, T>impl<T> FusedIterator for std::vec::IntoIter<T>impl<'a, T> FusedIterator for std::collections::btree_set::Range<'a, T>impl<T> FusedIterator for std::collections::vec_deque::IntoIter<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::Iter<'a, K, V>impl<'a, A> FusedIterator for std::option::Iter<'a, A>impl<'a, T, P> FusedIterator for std::slice::Split<'a, T, P> where
P: FnMut(&T) -> bool,impl<T> FusedIterator for std::result::IntoIter<T>impl<'a> FusedIterator for Lines<'a>impl<I> FusedIterator for Rev<I> where
I: FusedIterator + DoubleEndedIterator,impl<'a, T, P> FusedIterator for SplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Fuse<I> where
I: Iterator,impl<'a, P> FusedIterator for std::str::SplitN<'a, P> where
P: Pattern<'a>,impl<A, B> FusedIterator for Zip<A, B> where
A: FusedIterator,
B: FusedIterator,impl FusedIterator for EscapeDebugimpl<I, P> FusedIterator for TakeWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a, T, P> FusedIterator for RSplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl FusedIterator for EscapeUnicodeimpl<A> FusedIterator for RangeFrom<A> where
A: Step,impl<'a, P> FusedIterator for std::str::RSplit<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, T> FusedIterator for ChunksMut<'a, T>impl<A> FusedIterator for RangeInclusive<A> where
A: Step,impl<'a, T> FusedIterator for std::slice::IterMut<'a, T>impl<'a, P> FusedIterator for std::str::Split<'a, P> where
P: Pattern<'a>,impl<I> FusedIterator for Take<I> where
I: FusedIterator,impl<'a> FusedIterator for Chars<'a>impl<'a, A> FusedIterator for std::option::IterMut<'a, A>impl<'a, T, P> FusedIterator for SplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T> FusedIterator for std::slice::Iter<'a, T>impl<B, I, F> FusedIterator for FilterMap<I, F> where
F: FnMut(<I as Iterator>::Item) -> Option<B>,
I: FusedIterator,impl<A> FusedIterator for std::ops::Range<A> where
A: Step,impl<A> FusedIterator for Repeat<A> where
A: Clone,impl<'a, T, P> FusedIterator for std::slice::RSplitN<'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, P> FusedIterator for SplitTerminator<'a, P> where
P: Pattern<'a>,impl<'a, T, P> FusedIterator for std::slice::SplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<A> FusedIterator for std::option::IntoIter<A>impl<I, P> FusedIterator for Filter<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a, T> FusedIterator for std::result::Iter<'a, T>impl<I, P> FusedIterator for SkipWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<I> FusedIterator for Enumerate<I> where
I: FusedIterator,impl<T> FusedIterator for Empty<T>impl<'a, T, P> FusedIterator for RSplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T> FusedIterator for Windows<'a, T>impl<I> FusedIterator for Cycle<I> where
I: Clone + Iterator,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<'a, P> FusedIterator for RMatches<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, T> FusedIterator for std::result::IterMut<'a, T>impl<'a> FusedIterator for LinesAny<'a>impl<'a, P> FusedIterator for MatchIndices<'a, P> where
P: Pattern<'a>,impl<'a, I> FusedIterator for &'a mut I where
I: FusedIterator + ?Sized,impl<'a> FusedIterator for CharIndices<'a>impl<'a, I, T> FusedIterator for Cloned<I> where
I: FusedIterator<Item = &'a T>,
T: 'a + Clone,impl<'a, P> FusedIterator for std::str::RSplitN<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<I> FusedIterator for Peekable<I> where
I: FusedIterator,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> FusedIterator for Bytes<'a>impl<A, B> FusedIterator for Chain<A, B> where
A: FusedIterator,
B: FusedIterator<Item = <A as Iterator>::Item>,impl<I> FusedIterator for Skip<I> where
I: FusedIterator,impl<T> FusedIterator for Once<T>impl<I> FusedIterator for DecodeUtf8<I> where
I: FusedIterator<Item = u8>,impl FusedIterator for std::char::EscapeDefaultimpl<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 std::slice::RSplit<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, P> FusedIterator for RSplitTerminator<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl FusedIterator for std::ascii::EscapeDefaultimpl<'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>