pub fn join4<Fut1, Fut2, Fut3, Fut4>(
future1: Fut1,
future2: Fut2,
future3: Fut3,
future4: Fut4
) -> Join4<Fut1, Fut2, Fut3, Fut4>ⓘNotable traits for Join4<Fut1, Fut2, Fut3, Fut4>
impl<Fut1: Future, Fut2: Future, Fut3: Future, Fut4: Future> Future for Join4<Fut1, Fut2, Fut3, Fut4> type Output = (Fut1::Output, Fut2::Output, Fut3::Output, Fut4::Output);
where
Fut1: Future,
Fut2: Future,
Fut3: Future,
Fut4: Future,
Same as join
, but with more futures.
use futures::future;
let a = async { 1 };
let b = async { 2 };
let c = async { 3 };
let d = async { 4 };
let tuple = future::join4(a, b, c, d);
assert_eq!(tuple.await, (1, 2, 3, 4));