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.
Implementors
impl<'a> FusedIterator for SplitWhitespace<'a>
impl<I> FusedIterator for Utf16Encoder<I> where
I: FusedIterator<Item = char>,impl FusedIterator for ToUppercase
impl FusedIterator for ToLowercase
impl<'a, T, P> FusedIterator for RSplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<A> FusedIterator for RangeInclusive<A> where
A: Step,impl<'a, T, P> FusedIterator for std::slice::RSplitN<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Fuse<I> where
I: Iterator,impl<I> FusedIterator for Take<I> where
I: FusedIterator,impl<I> FusedIterator for Rev<I> where
I: FusedIterator + DoubleEndedIterator,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::SplitN<'a, P> where
P: Pattern<'a>,impl<'a, T, P> FusedIterator for SplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, T, P> FusedIterator for SplitMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<I> FusedIterator for Enumerate<I> where
I: FusedIterator,impl<I, P> FusedIterator for SkipWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a, T, P> FusedIterator for std::slice::RSplit<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a> FusedIterator for LinesAny<'a>
impl<'a, A> FusedIterator for std::option::Iter<'a, A>
impl<A, B> FusedIterator for Zip<A, B> where
A: FusedIterator,
B: FusedIterator,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> FusedIterator for Chars<'a>
impl<I> FusedIterator for Peekable<I> where
I: FusedIterator,impl<'a> FusedIterator for Bytes<'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 Matches<'a, P> where
P: Pattern<'a>,impl<'a, T> FusedIterator for std::slice::IterMut<'a, T>
impl<'a, P> FusedIterator for RMatches<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl<I> FusedIterator for Cycle<I> where
I: Clone + Iterator,impl<A> FusedIterator for RangeFrom<A> where
A: Step,impl<'a, P> FusedIterator for MatchIndices<'a, P> where
P: Pattern<'a>,impl<'a> FusedIterator for Lines<'a>
impl<I, P> FusedIterator for Filter<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl<'a, P> FusedIterator for SplitTerminator<'a, P> where
P: Pattern<'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, P> FusedIterator for RSplitNMut<'a, T, P> where
P: FnMut(&T) -> bool,impl<'a, I> FusedIterator for &'a mut I where
I: FusedIterator + ?Sized,impl<A> FusedIterator for std::ops::Range<A> where
A: Step,impl<T> FusedIterator for Empty<T>
impl<'a, T> FusedIterator for Chunks<'a, T>
impl<'a, I, T> FusedIterator for Cloned<I> where
I: FusedIterator<Item = &'a T>,
T: 'a + Clone,impl<B, I, F> FusedIterator for Map<I, F> where
F: FnMut(<I as Iterator>::Item) -> B,
I: FusedIterator,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<'a, T> FusedIterator for std::result::IterMut<'a, T>
impl<'a, P> FusedIterator for RSplitTerminator<'a, P> where
P: Pattern<'a>,
<P as Pattern<'a>>::Searcher: ReverseSearcher<'a>,impl FusedIterator for std::char::EscapeDefault
impl<'a, T> FusedIterator for ChunksMut<'a, T>
impl<'a> FusedIterator for CharIndices<'a>
impl<A> FusedIterator for Repeat<A> where
A: Clone,impl<I, F> FusedIterator for Inspect<I, F> where
F: FnMut(&<I as Iterator>::Item) -> (),
I: FusedIterator,impl<T> FusedIterator for std::result::IntoIter<T>
impl<T> FusedIterator for Once<T>
impl<'a, P> FusedIterator for std::str::Split<'a, P> where
P: Pattern<'a>,impl<'a, A> FusedIterator for std::option::IterMut<'a, A>
impl<I, U, F> FusedIterator for FlatMap<I, U, F> where
F: FnMut(<I as Iterator>::Item) -> U,
I: FusedIterator,
U: IntoIterator,impl<I> FusedIterator for DecodeUtf8<I> where
I: FusedIterator<Item = u8>,impl<I, P> FusedIterator for TakeWhile<I, P> where
I: FusedIterator,
P: FnMut(&<I as Iterator>::Item) -> bool,impl FusedIterator for EscapeUnicode
impl<A> FusedIterator for std::option::IntoIter<A>
impl<'a, T> FusedIterator for std::result::Iter<'a, T>
impl<'a, T> FusedIterator for std::slice::Iter<'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, T> FusedIterator for Windows<'a, T>
impl FusedIterator for EscapeDebug
impl<'a, T> FusedIterator for std::collections::btree_set::Intersection<'a, T> where
T: Ord,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> FusedIterator for EncodeUtf16<'a>
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<T> FusedIterator for std::collections::binary_heap::IntoIter<T>
impl<'a, T> FusedIterator for std::collections::btree_set::Range<'a, T>
impl<'a, K, V> FusedIterator for std::collections::btree_map::Values<'a, K, V>
impl<'a, T> FusedIterator for std::collections::vec_deque::Drain<'a, T> where
T: 'a,impl<'a> FusedIterator for std::string::Drain<'a>
impl<'a, T> FusedIterator for std::collections::linked_list::Iter<'a, T>
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<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::btree_set::IntoIter<T>
impl<T> FusedIterator for std::vec::IntoIter<T>
impl<'a, T> FusedIterator for std::collections::binary_heap::Drain<'a, T> where
T: 'a,impl<T> FusedIterator for std::collections::linked_list::IntoIter<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::Iter<'a, K, V>
impl<'a, K, V> FusedIterator for std::collections::btree_map::Range<'a, K, V>
impl<'a, T> FusedIterator for std::collections::binary_heap::Iter<'a, T>
impl<T> FusedIterator for std::collections::vec_deque::IntoIter<T>
impl<'a, K, V> FusedIterator for std::collections::btree_map::ValuesMut<'a, K, V>
impl<'a, T> FusedIterator for std::collections::btree_set::SymmetricDifference<'a, T> where
T: Ord,impl<K, V> FusedIterator for std::collections::btree_map::IntoIter<K, V>
impl<'a, T> FusedIterator for std::collections::btree_set::Difference<'a, T> where
T: Ord,impl<'a, K, V> FusedIterator for RangeMut<'a, K, V>
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>