Async-Await

Just two macros to emulate a simple Async and Await using Futures (provided by [eventual][https://github.com/carllerche/eventual]).

Usage

This is available in crates.io. Add this to your Cargo.toml:

[dependencies] async-await = "0.1.2"

Example

Here is a simple example, you need to do the #[macro_use] and use async_await::*; because of the expansion of the macros :)

```rust

[macro_use]

extern crate async_await;

use async_await::*;

fn main() { let computation = async!{"Hello world!"}; println!("{}", await!(computation)); } ```

Another example using hyper, a shared client and a block in async :)

```rust

[macro_use]

extern crate async_await; extern crate hyper;

use std::io::Read; use std::sync::Arc;

use async_await::*;

use hyper::Client; use hyper::header::Connection;

fn main() { let client = Arc::new(Client::new());

let client_comp = client.clone();
let computation = async!{{
    let mut res = client_comp.get("http://rust-lang.org/")
        .header(Connection::close())
        .send().unwrap();
    let mut body = String::new();
    res.read_to_string(&mut body).unwrap();
    body
}};

println!("Before await!");
println!("{}", await!{computation});
println!("After await!");

} ```

You can also provide a default value in case that the computation fails:

```rust

[macro_use]

extern crate async_await;

use async_await::*;

fn main() { let computation = async!{panic!(":()")}; assert_eq!("Recovered!", await!{computation, "Recovered!"}); } ```

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.