Struct futures::stream::Fold

#[must_use = "streams do nothing unless polled"]
pub struct Fold<S, Fut, T, F> where
    Fut: IntoFuture,  { /* fields omitted */ }

A future used to collect all the results of a stream into one generic type.

This future is returned by the Stream::fold method.

Trait Implementations

impl<S, Fut, T, F> Future for Fold<S, Fut, T, F> where
    F: FnMut(T, <S as Stream>::Item) -> Fut,
    Fut: IntoFuture<Item = T, Error = <S as Stream>::Error>,
    S: Stream, 

type Item = T

A successful value

type Error = <S as Stream>::Error

An error

fn poll(&mut self, cx: &mut Context) -> Result<Async<T>, <S as Stream>::Error>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.

impl<S, Fut, T, F> Debug for Fold<S, Fut, T, F> where
    F: Debug,
    Fut: Debug + IntoFuture,
    S: Debug,
    T: Debug,
    <Fut as IntoFuture>::Future: Debug, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.