Struct futures::stream::ForEach

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

A stream combinator which executes a unit closure over each item on a stream.

This structure is returned by the Stream::for_each method.

Trait Implementations

impl<S, U, F> Debug for ForEach<S, U, F> where
    F: Debug,
    S: Debug,
    U: Debug + IntoFuture,
    <U as IntoFuture>::Future: Debug, 

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

Formats the value using the given formatter.

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

type Item = S

A successful value

type Error = <S as Stream>::Error

An error

fn poll(&mut self, cx: &mut Context) -> Result<Async<S>, <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.