Struct futures::future::Then

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#[must_use = "futures do nothing unless polled"]
pub struct Then<Fut1, Fut2, F> { /* fields omitted */ }

[−] Expand description

Future for the then combinator, chaining computations on the end of another future regardless of its outcome.

This is created by the Future::then method.

Trait Implementations

impl<Fut1, Fut2, F> Debug for Then<Fut1, Fut2, F> where     F: Debug,     Fut1: Debug,     Fut2: 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<Fut1, Fut2, F> Future for Then<Fut1, Fut2, F> where     F: FnOnce(<Fut1 as Future>::Output) -> Fut2,     Fut1: Future,     Fut2: Future,

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type Output = <Fut2 as Future>::Output

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

futures in libcore are unstable

The result of the Future.

fn poll(     self: PinMut<Then<Fut1, Fut2, F>>,     cx: &mut Context ) -> Poll<<Fut2 as Future>::Output>

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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.