pub fn join4<Fut1, Fut2, Fut3, Fut4>( future1: Fut1, future2: Fut2, future3: Fut3, future4: Fut4 ) -> Join4<Fut1, Fut2, Fut3, Fut4> ⓘwhere Fut1: Future, Fut2: Future, Fut3: Future, Fut4: Future,
Same as join, but with more futures.
join
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));