Struct futures::stream::ForEach

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

[−] Expand description

A stream combinator which executes a unit closure over each item on a stream.

This structure is returned by the Stream::for_each method.

Trait Implementations

impl<St, Fut, F> Unpin for ForEach<St, Fut, F> where     F: FnMut(<St as Stream>::Item) -> Fut,     Fut: Future<Output = ()> + Unpin,     St: Stream + Unpin,

impl<St, Fut, F> Debug for ForEach<St, Fut, F> where     F: Debug,     Fut: Debug,     St: 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<St, Fut, F> Future for ForEach<St, Fut, F> where     F: FnMut(<St as Stream>::Item) -> Fut,     Fut: Future<Output = ()>,     St: Stream,

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type Output = ()

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

futures in libcore are unstable

The result of the Future.

fn poll(self: PinMut<ForEach<St, Fut, F>>, cx: &mut Context) -> Poll<()>

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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.