Struct futures_util::stream::Next

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[+] Expand attributes
#[must_use = "futures do nothing unless polled"]
pub struct Next<'a, St: 'a> { /* fields omitted */ }

[−] Expand description

A future of the next element of a stream.

Trait Implementations

impl<'a, St: Debug + 'a> Debug for Next<'a, St>

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

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Formats the value using the given formatter.

impl<St: Stream + Unpin, '_> Unpin for Next<'_, St>

impl<St: Stream + Unpin, '_> Future for Next<'_, St>

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type Output = Option<St::Item>

🔬 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<Self::Output>

[−]

🔬 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.