[−][src]Struct async_fuse::Once

pub struct Once<T> { /* fields omitted */ }

Fusing adapter that is capable of polling an interior value that is being fused using a custom polling function.

See once for details.

Implementations

impl<T> Once<T>[src]

pub fn empty() -> Once<T>ⓘ

Notable traits for Once<T>

impl<T> Future for Once<T> where
    T: Future,  type Output = T::Output;
[src]

Construct an empty value that can never complete.

pub fn is_empty(&self) -> bool[src]

Test if the polled for value is empty.

Examples

use tokio::time;
use std::time::Duration;

let mut sleep = async_fuse::once(time::sleep(Duration::from_millis(200)));
tokio::pin!(sleep);

assert!(!sleep.is_empty());
sleep.set(async_fuse::Once::empty());
assert!(sleep.is_empty());

Trait Implementations

impl<T> Future for Once<T> where
    T: Future, [src]

type Output = T::Output

The type of value produced on completion.

impl<'__pin, T> Unpin for Once<T> where
    __Origin<'__pin, T>: Unpin, [src]

Auto Trait Implementations

impl<T> RefUnwindSafe for Once<T> where
    T: RefUnwindSafe, [src]

impl<T> Send for Once<T> where
    T: Send, [src]

impl<T> Sync for Once<T> where
    T: Sync, [src]

impl<T> UnwindSafe for Once<T> where
    T: UnwindSafe, [src]

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, [src]

impl<F> IntoFuture for F where
    F: Future, [src]

type Output = <F as Future>::Output

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

The output that the future will produce on completion.

type Future = F

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

Which kind of future are we turning this into?

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.