futuretest/src/main.rs

21 строка
397 B
Rust

#![feature(conservative_impl_trait)]
extern crate futures;
extern crate tokio_core;
use futures::future::{self};
use futures::future::*;
use tokio_core::reactor::Core;
fn main() {
let mut core = Core::new().expect("Failed to initialize tokio_core reactor!");
let f = test();
core.run(f).unwrap();
}
fn test() -> MapErr<(), ()> {
future::ok(())
.map_err(|String| ())
}