Struct core::iter::Fuse

#[must_use = "iterator adaptors are lazy and do nothing unless consumed"]
pub struct Fuse<I> {
    iter: I,
    done: bool,
}

An iterator that yields None forever after the underlying iterator yields None once.

This struct is created by the fuse() method on Iterator. See its documentation for more.

Fields

iter
done

Trait Implementations

impl<I> Iterator for Fuse<I> where I: Iterator

type Item = I::Item

fn next(&mut self) -> Option<I::Item>

fn nth(&mut self, n: usize) -> Option<I::Item>

fn last(self) -> Option<I::Item>

fn count(self) -> usize

fn size_hint(&self) -> (usize, Option<usize>)

fn chain<U>(self, other: U) -> Chain<Self, U::IntoIter> where Self: Sized, U: IntoIterator<Item=Self::Item>

fn zip<U>(self, other: U) -> Zip<Self, U::IntoIter> where Self: Sized, U: IntoIterator

fn map<B, F>(self, f: F) -> Map<Self, F> where Self: Sized, F: FnMut(Self::Item) -> B

fn filter<P>(self, predicate: P) -> Filter<Self, P> where Self: Sized, P: FnMut(&Self::Item) -> bool

fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where Self: Sized, F: FnMut(Self::Item) -> Option<B>

fn enumerate(self) -> Enumerate<Self> where Self: Sized

fn peekable(self) -> Peekable<Self> where Self: Sized

fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where Self: Sized, P: FnMut(&Self::Item) -> bool

fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where Self: Sized, P: FnMut(&Self::Item) -> bool

fn skip(self, n: usize) -> Skip<Self> where Self: Sized

fn take(self, n: usize) -> Take<Self> where Self: Sized

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where Self: Sized, F: FnMut(&mut St, Self::Item) -> Option<B>

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where Self: Sized, U: IntoIterator, F: FnMut(Self::Item) -> U

fn fuse(self) -> Fuse<Self> where Self: Sized

fn inspect<F>(self, f: F) -> Inspect<Self, F> where Self: Sized, F: FnMut(&Self::Item)

fn by_ref(&mut self) -> &mut Self where Self: Sized

fn collect<B: FromIterator<Self::Item>>(self) -> B where Self: Sized

fn partition<B, F>(self, f: F) -> (B, B) where Self: Sized, B: Default + Extend<Self::Item>, F: FnMut(&Self::Item) -> bool

fn fold<B, F>(self, init: B, f: F) -> B where Self: Sized, F: FnMut(B, Self::Item) -> B

fn all<F>(&mut self, f: F) -> bool where Self: Sized, F: FnMut(Self::Item) -> bool

fn any<F>(&mut self, f: F) -> bool where Self: Sized, F: FnMut(Self::Item) -> bool

fn find<P>(&mut self, predicate: P) -> Option<Self::Item> where Self: Sized, P: FnMut(&Self::Item) -> bool

fn position<P>(&mut self, predicate: P) -> Option<usize> where Self: Sized, P: FnMut(Self::Item) -> bool

fn rposition<P>(&mut self, predicate: P) -> Option<usize> where P: FnMut(Self::Item) -> bool, Self: Sized + ExactSizeIterator + DoubleEndedIterator

fn max(self) -> Option<Self::Item> where Self: Sized, Self::Item: Ord

fn min(self) -> Option<Self::Item> where Self: Sized, Self::Item: Ord

fn max_by<B: Ord, F>(self, f: F) -> Option<Self::Item> where Self: Sized, F: FnMut(&Self::Item) -> B

fn max_by_key<B: Ord, F>(self, f: F) -> Option<Self::Item> where Self: Sized, F: FnMut(&Self::Item) -> B

fn min_by<B: Ord, F>(self, f: F) -> Option<Self::Item> where Self: Sized, F: FnMut(&Self::Item) -> B

fn min_by_key<B: Ord, F>(self, f: F) -> Option<Self::Item> where Self: Sized, F: FnMut(&Self::Item) -> B

fn rev(self) -> Rev<Self> where Self: Sized + DoubleEndedIterator

fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB) where FromA: Default + Extend<A>, FromB: Default + Extend<B>, Self: Sized + Iterator<Item=(A, B)>

fn cloned<'a, T: 'a>(self) -> Cloned<Self> where Self: Sized + Iterator<Item=&'a T>, T: Clone

fn cycle(self) -> Cycle<Self> where Self: Sized + Clone

fn sum<S>(self) -> S where S: Add<Self::Item, Output=S> + Zero, Self: Sized

fn product<P>(self) -> P where P: Mul<Self::Item, Output=P> + One, Self: Sized

fn cmp<I>(self, other: I) -> Ordering where I: IntoIterator<Item=Self::Item>, Self::Item: Ord, Self: Sized

fn partial_cmp<I>(self, other: I) -> Option<Ordering> where I: IntoIterator, Self::Item: PartialOrd<I::Item>, Self: Sized

fn eq<I>(self, other: I) -> bool where I: IntoIterator, Self::Item: PartialEq<I::Item>, Self: Sized

fn ne<I>(self, other: I) -> bool where I: IntoIterator, Self::Item: PartialEq<I::Item>, Self: Sized

fn lt<I>(self, other: I) -> bool where I: IntoIterator, Self::Item: PartialOrd<I::Item>, Self: Sized

fn le<I>(self, other: I) -> bool where I: IntoIterator, Self::Item: PartialOrd<I::Item>, Self: Sized

fn gt<I>(self, other: I) -> bool where I: IntoIterator, Self::Item: PartialOrd<I::Item>, Self: Sized

fn ge<I>(self, other: I) -> bool where I: IntoIterator, Self::Item: PartialOrd<I::Item>, Self: Sized

impl<I> DoubleEndedIterator for Fuse<I> where I: DoubleEndedIterator

fn next_back(&mut self) -> Option<I::Item>

impl<I> ExactSizeIterator for Fuse<I> where I: ExactSizeIterator

fn len(&self) -> usize

Derived Implementations

impl<I: Clone> Clone for Fuse<I>

fn clone(&self) -> Fuse<I>

fn clone_from(&mut self, source: &Self)