extern crate rustc_serialize;

use rustc_serialize::json;

#[derive(RustcDecodable, RustcEncodable)]
struct Penguin {
    name : String,
    born : i16
}
fn main() {
    let pengu = Penguin { name : "pengu".to_string(), born : 1999 };
    println!("{}", json::encode(&pengu).unwrap());
    let pingu : Penguin = json::decode(r##"{"name":"pingu","born":2001}"##).unwrap();
    assert_eq!(&pingu.name, "pingu");
    assert_eq!(pingu.born, 2001);
}