gistfile1.rs

trait IA {
    fn foo(&self);
}

trait IB : IA {
    fn bar(&self);
}

struct SS {
    x : int
}

impl IB for SS {
    fn foo(&self) {
        println!("foo!");
    }

    fn bar(&self) {
        println!("bar! {}", self.x);
    }
}