Function futures::failed
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pub fn failed<T, E>(e: E) -> Failed<T, E> where T: Send + 'static, E: Send + 'static
Creates a "leaf future" from an immediate value of a failed computation.
The returned future is similar to done
where it will immediately run a
scheduled callback with the provided value.
Examples
use futures::*; let future_of_err_1 = failed::<u32, u32>(1);