futuretest/src/main.rs

21 行
480 B
Rust

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 = future::result(Ok(()))
.map_err(|()| "&'static str error")
.and_then(|_|
future::result(Ok(())
.map_err(|()| "String error".to_owned())
)
)
;
core.run(f).unwrap();
}