Struct futures::future::PollFn

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

[−] Expand description

A future which adapts a function returning Poll.

Created by the poll_fn function.

Trait Implementations

impl<F> Debug for PollFn<F> where     F: Debug,

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

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Formats the value using the given formatter.

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

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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<PollFn<F>>, cx: &mut Context) -> Poll<T>

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🔬 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.