Function futures::future::join

Important traits for Join<Fut1, Fut2>

impl<Fut1, Fut2> Future for Join<Fut1, Fut2> where
    Fut1: Future,
    Fut2: Future,  type Output = (<Fut1 as Future>::Output, <Fut2 as Future>::Output);

pub fn join<Fut1, Fut2>(future1: Fut1, future2: Fut2) -> Join<Fut1, Fut2> where
    Fut1: Future,
    Fut2: Future, 

Joins the result of two futures, waiting for them both to complete.

This function will return a new future which awaits both futures to complete. The returned future will finish with a tuple of both results.

Note that this function consumes the passed futures and returns a wrapped version of it.

Examples

#![feature(async_await, await_macro, futures_api)]
use futures::future;

let a = future::ready(1);
let b = future::ready(2);
let pair = future::join(a, b);

assert_eq!(await!(pair), (1, 2));