Struct futures_util::stream::Fold

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#[must_use = "streams do nothing unless polled"]
pub struct Fold<St, Fut, T, F> { /* fields omitted */ }

[−] Expand description

A future used to collect all the results of a stream into one generic type.

This future is returned by the Stream::fold method.

Trait Implementations

impl<St: Debug, Fut: Debug, T: Debug, F: Debug> Debug for Fold<St, Fut, T, F>

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

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Formats the value using the given formatter.

impl<St: Unpin, Fut: Unpin, T, F> Unpin for Fold<St, Fut, T, F>

impl<St, Fut, T, F> Future for Fold<St, Fut, T, F> where     St: Stream,     F: FnMut(T, St::Item) -> Fut,     Fut: Future<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.