Struct futures_util::future::Flatten

#[must_use = "futures do nothing unless polled"]
pub struct Flatten<A> where
    A: Future,
    A::Item: IntoFuture,  { /* fields omitted */ }

Future for the flatten combinator.

This combinator turns a Future-of-a-Future into a single Future.

This is created by the Future::flatten method.

Trait Implementations

impl<A> Debug for Flatten<A> where
    A: Future + Debug,
    A::Item: IntoFuture,
    <<A as Future>::Item as IntoFuture>::Future: Debug, 

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

Formats the value using the given formatter.

impl<A> Future for Flatten<A> where
    A: Future,
    A::Item: IntoFuture,
    <<A as Future>::Item as IntoFuture>::Error: From<<A as Future>::Error>, 

type Item = <<A as Future>::Item as IntoFuture>::Item

A successful value

type Error = <<A as Future>::Item as IntoFuture>::Error

An error

fn poll(&mut self, cx: &mut Context) -> Poll<Self::Item, Self::Error>

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