Struct futures_util::future::PollFn

#[must_use = "futures do nothing unless polled"]
pub struct PollFn<F> { /* fields omitted */ }

A future which wraps a function returning Poll.

Created by the poll_fn() function.

Trait Implementations

impl<F: Debug> Debug for PollFn<F>

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

Formats the value using the given formatter.

impl<F> Unpin for PollFn<F>

impl<T, F> Future for PollFn<F> where     F: FnMut(&mut Context) -> Poll<T>,

type Output = T

🔬 This is a nightly-only experimental API. (futures_api)

futures in libcore are unstable

The result of the Future.

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

🔬 This is a nightly-only experimental API. (futures_api)

futures in libcore are unstable

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