Trait std::iter::FusedIterator
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[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<'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::vec::IntoIter<T>
impl<'a, K, V> FusedIterator for std::collections::btree_map::Iter<'a, K, V>
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, T> FusedIterator for std::collections::linked_list::Iter<'a, T>
impl<'a, T> FusedIterator for std::collections::btree_set::Range<'a, T>
impl<'a, T> FusedIterator for std::collections::vec_deque::Drain<'a, T> where
T: 'a,impl<T> FusedIterator for std::collections::btree_set::IntoIter<T>
impl<'a, K, V> FusedIterator for RangeMut<'a, K, V>
impl<'a, K, V> FusedIterator for std::collections::btree_map::ValuesMut<'a, K, V>
impl<'a, K, V> FusedIterator for std::collections::btree_map::IterMut<'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::Range<'a, K, V>
impl<'a, T> FusedIterator for std::collections::btree_set::SymmetricDifference<'a, T> where
T: Ord,impl<'a, T> FusedIterator for std::collections::btree_set::Difference<'a, T> where
T: Ord,impl<K, V> FusedIterator for std::collections::btree_map::IntoIter<K, V>
impl<T> FusedIterator for std::collections::linked_list::IntoIter<T>
impl<'a> FusedIterator for EncodeUtf16<'a>
impl<'a, T> FusedIterator for std::collections::linked_list::IterMut<'a, T>
impl<'a, T> FusedIterator for std::collections::btree_set::Union<'a, T> where
T: Ord,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::vec::Drain<'a, T>
impl<'a, T> FusedIterator for std::collections::binary_heap::Iter<'a, T>
impl<I> FusedIterator for Box<I> where
I: FusedIterator + ?Sized,impl<'a, T> FusedIterator for std::collections::vec_deque::Iter<'a, 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> FusedIterator for std::option::IntoIter<A>
impl FusedIterator for EscapeUnicode
impl<I> FusedIterator for Skip<I> where
I: FusedIterator,impl<'a, P> FusedIterator for std::str::SplitN<'a, P> where
P: Pattern<'a>,impl<'a, P> FusedIterator for MatchIndices<'a, P> where
P: Pattern<'a>,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<'a, T> FusedIterator for Chunks<'a, T>
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 RMatches<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, T, P> FusedIterator for SplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a> FusedIterator for LinesAny<'a>
impl<'a> FusedIterator for Chars<'a>
impl<'a, T, P> FusedIterator for std::slice::SplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T, P> FusedIterator for RSplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<T> FusedIterator for Once<T>
impl<'a, T> FusedIterator for Windows<'a, T>
impl<I> FusedIterator for Peekable<I> where
I: FusedIterator,impl<T> FusedIterator for std::result::IntoIter<T>
impl<I, U, F> FusedIterator for FlatMap<I, U, F> where
F: FnMut(<I as Iterator>::Item) -> U,
I: FusedIterator,
U: IntoIterator,impl FusedIterator for std::char::EscapeDefault
impl<I> FusedIterator for Cycle<I> where
I: Clone + Iterator,impl<A> FusedIterator for std::ops::Range<A> where
A: Step,impl<'a, P> FusedIterator for std::str::RSplitN<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<A> FusedIterator for RangeFrom<A> where
A: Step,impl<'a, P> FusedIterator for Matches<'a, P> where
P: Pattern<'a>,impl<A> FusedIterator for RangeInclusive<A> where
A: Step,impl<I, F> FusedIterator for Inspect<I, F> where
F: FnMut(&<I as Iterator>::Item) -> (),
I: FusedIterator,impl<'a, I, T> FusedIterator for Cloned<I> where
I: FusedIterator<Item = &'a T>,
T: 'a + Clone,impl<'a, T> FusedIterator for std::result::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, P> FusedIterator for RMatchIndices<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl FusedIterator for EscapeDebug
impl<'a, T, P> FusedIterator for RSplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, P> FusedIterator for SplitTerminator<'a, P> where
P: Pattern<'a>,impl<'a, T, P> FusedIterator for std::slice::RSplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<T> FusedIterator for Empty<T>
impl<I> FusedIterator for DecodeUtf8<I> where
I: FusedIterator<Item = u8>,impl<I> FusedIterator for Take<I> where
I: FusedIterator,impl<'a, A> FusedIterator for std::option::IterMut<'a, A>
impl<A, B> FusedIterator for Chain<A, B> where
A: FusedIterator,
B: FusedIterator<Item = <A as Iterator>::Item>,impl<'a, T> FusedIterator for std::slice::IterMut<'a, T>
impl<'a> FusedIterator for Lines<'a>
impl<'a, T> FusedIterator for std::slice::Iter<'a, T>
impl<'a, P> FusedIterator for std::str::Split<'a, P> where
P: Pattern<'a>,impl<'a, P> FusedIterator for RSplitTerminator<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<'a, T, P> FusedIterator for std::slice::RSplit<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T> FusedIterator for ChunksMut<'a, T>
impl<I> FusedIterator for Rev<I> where
I: FusedIterator + DoubleEndedIterator,impl<'a> FusedIterator for CharIndices<'a>
impl<I> FusedIterator for Fuse<I> where
I: Iterator,impl<A> FusedIterator for Repeat<A> where
A: Clone,impl<'a, I> FusedIterator for &'a mut I where
I: FusedIterator + ?Sized,impl<I> FusedIterator for Enumerate<I> where
I: FusedIterator,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, A> FusedIterator for std::option::Iter<'a, A>
impl<'a, T> FusedIterator for std::result::IterMut<'a, T>
impl<'a, T, P> FusedIterator for SplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<A, B> FusedIterator for Zip<A, B> where
A: FusedIterator,
B: FusedIterator,impl<I, P> FusedIterator for Filter<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a, T, P> FusedIterator for std::slice::Split<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a> FusedIterator for SplitWhitespace<'a>
impl FusedIterator for ToLowercase
impl FusedIterator for ToUppercase
impl FusedIterator for std::ascii::EscapeDefault
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>