Struct futures_util::future::Map

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

[−] Expand description

Future for the map combinator, changing the type of a future.

This is created by the Future::map method.

Trait Implementations

impl<Fut: Debug, F: Debug> Debug for Map<Fut, F>

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

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Formats the value using the given formatter.

impl<Fut: Unpin, F> Unpin for Map<Fut, F>

impl<Fut, F, T> Future for Map<Fut, F> where     Fut: Future,     F: FnOnce(Fut::Output) -> T,

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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<Self>, 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.