#[must_use = "futures do nothing unless polled"]
pub struct OptionFuture<F> { /* fields omitted */ }
A future representing a value which may or may not be present.
Created by the From
implementation for std::option::Option
.
use futures::prelude::*;
use futures::future::OptionFuture;
let fut: OptionFuture<_> = Some(123).into();
Formats the value using the given formatter. Read more
Performs copy-assignment from source
. Read more
🔬 This is a nightly-only experimental API. (futures_api
)
futures in libcore are unstable
The result of the Future
.
🔬 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. Read more