[−][src]Function futures_lite::future::try_join

pub fn try_join<T1, T2, E, Fut1, Fut2>(
    future1: Fut1, 
    future2: Fut2
) -> TryJoin<Fut1, Fut2>ⓘ
Important traits for TryJoin<Fut1, Fut2>
impl<T1, T2, E, Fut1, Fut2> Future for TryJoin<Fut1, Fut2> where
    Fut1: Future<Output = Result<T1, E>>,
    Fut2: Future<Output = Result<T2, E>>,     type Output = Result<(T1, T2), E>;
 where
    Fut1: Future<Output = Result<T1, E>>,
    Fut2: Future<Output = Result<T2, E>>, 

Joins two fallible futures, waiting for both to complete or one of them to error.

Examples

use futures_lite::*;

let a = async { Ok::<i32, i32>(1) };
let b = async { Err::<i32, i32>(2) };

assert_eq!(future::try_join(a, b).await, Err(2));