futures_concurrency::array

Struct Race

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pub struct Race<Fut, const N: usize>
where
    Fut: Future,
{ /* private fields */ }
Expand description

A future which waits for the first future to complete.

This struct is created by the race method on the Race trait. See its documentation for more.

Trait Implementations§

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impl<Fut, const N: usize> Debug for Race<Fut, N>
where Fut: Future + Debug, Fut::Output: Debug,

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

Formats the value using the given formatter. Read more
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impl<Fut, const N: usize> Future for Race<Fut, N>
where Fut: Future,

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type Output = <Fut as Future>::Output

The type of value produced on completion.
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
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impl<'pin, Fut, const N: usize> Unpin for Race<Fut, N>
where Fut: Future, __Race<'pin, Fut, N>: Unpin,

Auto Trait Implementations§

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impl<Fut, const N: usize> Freeze for Race<Fut, N>
where Fut: Freeze,

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impl<Fut, const N: usize> RefUnwindSafe for Race<Fut, N>
where Fut: RefUnwindSafe,

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impl<Fut, const N: usize> Send for Race<Fut, N>
where Fut: Send,

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impl<Fut, const N: usize> Sync for Race<Fut, N>
where Fut: Sync,

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impl<Fut, const N: usize> UnwindSafe for Race<Fut, N>
where Fut: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<F> FutureExt for F
where F: Future + ?Sized,

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fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>
where Self: Unpin,

A convenience for calling Future::poll() on !Unpin types.
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fn or<F>(self, other: F) -> Or<Self, F>
where Self: Sized, F: Future<Output = Self::Output>,

Returns the result of self or other future, preferring self if both are ready. Read more
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fn race<F>(self, other: F) -> Race<Self, F>
where Self: Sized, F: Future<Output = Self::Output>,

Returns the result of self or other future, with no preference if both are ready. Read more
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fn catch_unwind(self) -> CatchUnwind<Self>
where Self: Sized + UnwindSafe,

Catches panics while polling the future. Read more
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fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a>>
where Self: Sized + Send + 'a,

Boxes the future and changes its type to dyn Future + Send + 'a. Read more
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fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>>
where Self: Sized + 'a,

Boxes the future and changes its type to dyn Future + 'a. Read more
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impl<F1> FutureExt for F1
where F1: Future,

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fn join<F2>(self, other: F2) -> Join2<F1, <F2 as IntoFuture>::IntoFuture>
where F1: Future, F2: IntoFuture,

Wait for both futures to complete.
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fn race<T, S2>(self, other: S2) -> Race2<T, F1, <S2 as IntoFuture>::IntoFuture>
where F1: Future<Output = T>, S2: IntoFuture<Output = T>,

Wait for the first future to complete.
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fn wait_until<D>(self, deadline: D) -> WaitUntil<Self, D::IntoFuture> ⓘ
where Self: Sized, D: IntoFuture,

Delay resolving the future until the given deadline. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<F> IntoFuture for F
where F: Future,

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type Output = <F as Future>::Output

The output that the future will produce on completion.
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type IntoFuture = F

Which kind of future are we turning this into?
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fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<F, T, E> TryFuture for F
where F: Future<Output = Result<T, E>> + ?Sized,

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type Ok = T

The type of successful values yielded by this future
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type Error = E

The type of failures yielded by this future
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fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>, ) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more
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impl<T, E, F> TryFuture for F
where F: Future<Output = Result<T, E>> + ?Sized,

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type Ok = T

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type Err = E

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.