Trait futures_concurrency::future::Race

pub trait Race {
    type Output;
    type Future: Future<Output = Self::Output>;

    fn race(self) -> Self::Future;
}

Wait for the first future to complete.

Awaits multiple futures simultaneously, returning the output of the first future which completes.

Required Associated Types

type Output

The resulting output type.

type Future: Future<Output = Self::Output>

Which kind of future are we turning this into?

Required Methods

fn race(self) -> Self::Future

Waits for multiple futures to complete.

Awaits multiple futures simultaneously, returning the output of the futures once both complete.

This function returns a new future which polls both futures concurrently.

Implementations on Foreign Types

impl<Fut, const N: usize> Race for [Fut; N]where
    Fut: IntoFuture,

type Output = <Fut as IntoFuture>::Output

type Future = Race<<Fut as IntoFuture>::IntoFuture, N>

fn race(self) -> Self::Future

impl<T, A> Race for (A,)where
    A: IntoFuture<Output = T>,

type Output = T

type Future = Race1<T, <A as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B> Race for (A, B)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,

type Output = T

type Future = Race2<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C> Race for (A, B, C)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,

type Output = T

type Future = Race3<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D> Race for (A, B, C, D)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,

type Output = T

type Future = Race4<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E> Race for (A, B, C, D, E)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,

type Output = T

type Future = Race5<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F> Race for (A, B, C, D, E, F)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,

type Output = T

type Future = Race6<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F, G> Race for (A, B, C, D, E, F, G)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,
    G: IntoFuture<Output = T>,

type Output = T

type Future = Race7<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture, <G as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F, G, H> Race for (A, B, C, D, E, F, G, H)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,
    G: IntoFuture<Output = T>,
    H: IntoFuture<Output = T>,

type Output = T

type Future = Race8<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture, <G as IntoFuture>::IntoFuture, <H as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F, G, H, I> Race for (A, B, C, D, E, F, G, H, I)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,
    G: IntoFuture<Output = T>,
    H: IntoFuture<Output = T>,
    I: IntoFuture<Output = T>,

type Output = T

type Future = Race9<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture, <G as IntoFuture>::IntoFuture, <H as IntoFuture>::IntoFuture, <I as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F, G, H, I, J> Race for (A, B, C, D, E, F, G, H, I, J)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,
    G: IntoFuture<Output = T>,
    H: IntoFuture<Output = T>,
    I: IntoFuture<Output = T>,
    J: IntoFuture<Output = T>,

type Output = T

type Future = Race10<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture, <G as IntoFuture>::IntoFuture, <H as IntoFuture>::IntoFuture, <I as IntoFuture>::IntoFuture, <J as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F, G, H, I, J, K> Race for (A, B, C, D, E, F, G, H, I, J, K)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,
    G: IntoFuture<Output = T>,
    H: IntoFuture<Output = T>,
    I: IntoFuture<Output = T>,
    J: IntoFuture<Output = T>,
    K: IntoFuture<Output = T>,

type Output = T

type Future = Race11<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture, <G as IntoFuture>::IntoFuture, <H as IntoFuture>::IntoFuture, <I as IntoFuture>::IntoFuture, <J as IntoFuture>::IntoFuture, <K as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<T, A, B, C, D, E, F, G, H, I, J, K, L> Race for (A, B, C, D, E, F, G, H, I, J, K, L)where
    A: IntoFuture<Output = T>,
    B: IntoFuture<Output = T>,
    C: IntoFuture<Output = T>,
    D: IntoFuture<Output = T>,
    E: IntoFuture<Output = T>,
    F: IntoFuture<Output = T>,
    G: IntoFuture<Output = T>,
    H: IntoFuture<Output = T>,
    I: IntoFuture<Output = T>,
    J: IntoFuture<Output = T>,
    K: IntoFuture<Output = T>,
    L: IntoFuture<Output = T>,

type Output = T

type Future = Race12<T, <A as IntoFuture>::IntoFuture, <B as IntoFuture>::IntoFuture, <C as IntoFuture>::IntoFuture, <D as IntoFuture>::IntoFuture, <E as IntoFuture>::IntoFuture, <F as IntoFuture>::IntoFuture, <G as IntoFuture>::IntoFuture, <H as IntoFuture>::IntoFuture, <I as IntoFuture>::IntoFuture, <J as IntoFuture>::IntoFuture, <K as IntoFuture>::IntoFuture, <L as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

impl<Fut> Race for Vec<Fut>where
    Fut: IntoFuture,

type Output = <Fut as IntoFuture>::Output

type Future = Race<<Fut as IntoFuture>::IntoFuture>

fn race(self) -> Self::Future

Implementors