[−][src]Trait futures_util::stream::FusedStream

pub trait FusedStream: Stream {
    fn is_terminated(&self) -> bool;
}

A stream which tracks whether or not the underlying stream should no longer be polled.

is_terminated will return true if a future should no longer be polled. Usually, this state occurs after poll_next (or try_poll_next) returned Poll::Ready(None). However, is_terminated may also return true if a stream has become inactive and can no longer make progress and should be ignored or dropped rather than being polled again.

Required methods

fn is_terminated(&self) -> bool

Returns true if the stream should no longer be polled.

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Implementations on Foreign Types

impl<P> FusedStream for Pin<P> where
    P: DerefMut + Unpin,
    <P as Deref>::Target: FusedStream, [src]

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Implementors

impl<'_, F> FusedStream for &'_ mut F where
    F: FusedStream + Unpin + ?Sized, [src]

impl<A, B> FusedStream for Either<A, B> where
    A: FusedStream,
    B: FusedStream<Item = A::Item>, [src]

impl<Fut> FusedStream for FlattenStream<Fut> where
    Fut: Future,
    Fut::Output: Stream + FusedStream, [src]

impl<Fut> FusedStream for TryFlattenStream<Fut> where
    Fut: TryFuture,
    Fut::Ok: TryStream<Error = Fut::Error> + FusedStream, [src]

impl<Fut, S> FusedStream for FlattenSink<Fut, S> where
    Fut: TryFuture<Ok = S>,
    S: TryStream<Error = Fut::Error> + FusedStream, [src]

impl<Fut: Future> FusedStream for futures_util::future::IntoStream<Fut>[src]

impl<Fut: Future> FusedStream for Once<Fut>[src]

impl<S, Item, E> FusedStream for SinkErrInto<S, Item, E> where
    S: Sink<Item> + FusedStream,
    S::Error: Into<E>, [src]

impl<S, Item, U, St, F> FusedStream for WithFlatMap<S, Item, U, St, F> where
    S: FusedStream + Sink<Item>,
    F: FnMut(U) -> St,
    St: Stream<Item = Result<Item, S::Error>>, [src]

impl<S: FusedStream, F> FusedStream for SinkMapErr<S, F>[src]

impl<S: Stream> FusedStream for Fuse<S>[src]

impl<St> FusedStream for Flatten<St> where
    St: FusedStream,
    St::Item: Stream, [src]

impl<St> FusedStream for Take<St> where
    St: FusedStream, [src]

impl<St> FusedStream for TryFlatten<St> where
    St: TryStream + FusedStream,
    St::Ok: TryStream,
    <St::Ok as TryStream>::Error: From<St::Error>, [src]

impl<St, E> FusedStream for ErrInto<St, E> where
    St: TryStream + FusedStream,
    St::Error: Into<E>, [src]

impl<St, F> FusedStream for Inspect<St, F> where
    St: FusedStream,
    F: FnMut(&St::Item), [src]

impl<St, F> FusedStream for InspectErr<St, F> where
    St: TryStream + FusedStream,
    F: FnMut(&St::Error), [src]

impl<St, F> FusedStream for InspectOk<St, F> where
    St: TryStream + FusedStream,
    F: FnMut(&St::Ok), [src]

impl<St, F, E> FusedStream for MapErr<St, F> where
    St: TryStream + FusedStream,
    F: FnMut(St::Error) -> E, [src]

impl<St, F, T> FusedStream for Map<St, F> where
    St: FusedStream,
    F: FnMut(St::Item) -> T, [src]

impl<St, F, T> FusedStream for MapOk<St, F> where
    St: TryStream + FusedStream,
    F: FnMut(St::Ok) -> T, [src]

impl<St, Fut, F> FusedStream for AndThen<St, Fut, F> where
    St: TryStream + FusedStream,
    F: FnMut(St::Ok) -> Fut,
    Fut: TryFuture<Error = St::Error>, [src]

impl<St, Fut, F> FusedStream for Filter<St, Fut, F> where
    St: Stream + FusedStream,
    F: FnMut(&St::Item) -> Fut,
    Fut: Future<Output = bool>, [src]

impl<St, Fut, F> FusedStream for OrElse<St, Fut, F> where
    St: TryStream + FusedStream,
    F: FnMut(St::Error) -> Fut,
    Fut: TryFuture<Ok = St::Ok>, [src]

impl<St, Fut, F> FusedStream for SkipWhile<St, Fut, F> where
    St: FusedStream,
    F: FnMut(&St::Item) -> Fut,
    Fut: Future<Output = bool>, [src]

impl<St, Fut, F> FusedStream for TakeWhile<St, Fut, F> where
    St: FusedStream,
    F: FnMut(&St::Item) -> Fut,
    Fut: Future<Output = bool>, [src]

impl<St, Fut, F> FusedStream for Then<St, Fut, F> where
    St: FusedStream,
    F: FnMut(St::Item) -> Fut,
    Fut: Future, [src]

impl<St, Fut, F> FusedStream for TryFilter<St, Fut, F> where
    St: TryStream + FusedStream,
    F: FnMut(&St::Ok) -> Fut,
    Fut: Future<Output = bool>, [src]

impl<St, Fut, F> FusedStream for TrySkipWhile<St, Fut, F> where
    St: TryStream + FusedStream,
    F: FnMut(&St::Ok) -> Fut,
    Fut: TryFuture<Ok = bool, Error = St::Error>, [src]

impl<St, Fut, F, T> FusedStream for FilterMap<St, Fut, F> where
    St: Stream + FusedStream,
    F: FnMut(St::Item) -> Fut,
    Fut: Future<Output = Option<T>>, [src]

impl<St, Fut, F, T> FusedStream for TryFilterMap<St, Fut, F> where
    St: TryStream + FusedStream,
    Fut: TryFuture<Ok = Option<T>, Error = St::Error>,
    F: FnMut(St::Ok) -> Fut, [src]

impl<St1, St2> FusedStream for Chain<St1, St2> where
    St1: Stream,
    St2: FusedStream<Item = St1::Item>, [src]

impl<St1, St2> FusedStream for Select<St1, St2> where
    St1: Stream,
    St2: Stream<Item = St1::Item>, [src]

impl<St1, St2> FusedStream for Zip<St1, St2> where
    St1: Stream,
    St2: Stream, [src]

impl<St: FusedStream> FusedStream for Skip<St>[src]

impl<St: Stream + FusedStream> FusedStream for Enumerate<St>[src]

impl<St: Stream> FusedStream for Peekable<St>[src]

impl<St: TryStream + FusedStream> FusedStream for futures_util::stream::IntoStream<St>[src]

impl<T> FusedStream for Empty<T>[src]

impl<T> FusedStream for Pending<T>[src]

impl<T> FusedStream for Repeat<T> where
    T: Clone, [src]

impl<T, F, Fut, Item> FusedStream for Unfold<T, F, Fut> where
    F: FnMut(T) -> Fut,
    Fut: Future<Output = Option<(Item, T)>>, [src]

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