Function tokio::prelude::future::done

pub fn done<T, E>(r: Result<T, E>) -> FutureResult<T, E>

Creates a new "leaf future" which will resolve with the given result.

The returned future represents a computation which is finished immediately. This can be useful with the finished and failed base future types to convert an immediate value to a future to interoperate elsewhere.

Examples

use futures::future::*;

let future_of_1 = result::<u32, u32>(Ok(1));
let future_of_err_2 = result::<u32, u32>(Err(2));