type Foo {
    a: int,
    b: int
}
impl Foo {
    fn new(a:int, b: int) {
    println "init"; // out: init
    self.a = a;
    self.b = b;
  }
}

let foo = Foo(1, 2);
println foo.a; // out: 1
println foo.b; // out: 2