Async-Await
==========
[![Crates.io](http://img.shields.io/crates/v/async-await.svg)](https://crates.io/crates/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](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](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.