rust/src/test/run-pass/simple-anon-objs.rs

use std;

fn main() {
    obj normal() {
        fn foo() -> int { ret 2; }
    }
    auto my_normal_obj = normal();

    // Extending an object with a new method
    auto my_anon_obj = obj { 
        fn bar() -> int { 
            ret 3;
        }
        with my_normal_obj
    };

    assert (my_normal_obj.foo() == 2);
    assert (my_anon_obj.bar() == 3);

    auto another_anon_obj = obj {
        fn baz() -> int {
            ret 4;
        }
        with my_anon_obj
    };

    assert (another_anon_obj.baz() == 4);

}