Function cros_async::select4

pub async fn select4<F1: Future + Unpin, F2: Future + Unpin, F3: Future + Unpin, F4: Future + Unpin>(
    f1: F1,
    f2: F2,
    f3: F3,
    f4: F4
) -> (SelectResult<F1>, SelectResult<F2>, SelectResult<F3>, SelectResult<F4>)

Creates a combinator that runs the four given futures until one or more completes, returning a tuple containing the result of the finished future(s) and the still pending future(s).

Example

use cros_async::{SelectResult, select4, block_on};
use futures::future::pending;
use futures::pin_mut;

let first = async {4};
let second = async {let () = pending().await;};
let third = async {5};
let fourth = async {let () = pending().await;};
pin_mut!(first);
pin_mut!(second);
pin_mut!(third);
pin_mut!(fourth);
match block_on(select4(first, second, third, fourth)) {
    (SelectResult::Finished(4), SelectResult::Pending(_second),
     SelectResult::Finished(5), SelectResult::Pending(_fourth)) => (),
    _ => panic!("Select didn't return the futures"),
};