Struct futures_util::future::Inspect

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[+] Expand attributes
#[must_use = "futures do nothing unless polled"]
pub struct Inspect<Fut, F> where
    Fut: Future,  { /* fields omitted */ }

[−] Expand description

Do something with the item of a future, passing it on.

This is created by the super::FutureExt::inspect method.

Trait Implementations

impl<Fut: Debug, F: Debug> Debug for Inspect<Fut, F> where     Fut: Future,

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

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Formats the value using the given formatter.

impl<Fut: Future + Unpin, F> Unpin for Inspect<Fut, F>

impl<Fut, F> Future for Inspect<Fut, F> where     Fut: Future,     F: FnOnce(&Fut::Output),

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type Output = Fut::Output

🔬 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<Fut::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.