Function cosmic::iced_futures::futures::prelude::future::err

source ·
pub fn err<T, E>(err: E) -> Ready<Result<T, E>> 
Expand description

Create a future that is immediately ready with an error value.

§Examples

use futures::future;

let a = future::err::<i32, i32>(1);
assert_eq!(a.await, Err(1));