karyon_core::async_util

Function select

Source 
pub fn select<T1, T2, F1, F2>(future1: F1, future2: F2) -> Select<F1, F2> ⓘ
where
    F1: Future<Output = T1>,
    F2: Future<Output = T2>,
Expand description

Returns the result of the future that completes first, preferring future1 if both are ready.

§Examples

use std::future;

use karyon_core::async_util::{select, Either};

 async {
    let fut1 = future::pending::<String>();
    let fut2 = future::ready(0);
    let res = select(fut1, fut2).await;
    assert!(matches!(res, Either::Right(0)));
    // ....
 };