1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 trait Foo { fn f(&self) -> int; }
12 trait Bar { fn g(&self) -> int; }
13 trait Baz { fn h(&self) -> int; }
15 trait Quux: Foo + Bar + Baz { }
19 impl Foo for A { fn f(&self) -> int { 10 } }
20 impl Bar for A { fn g(&self) -> int { 20 } }
21 impl Baz for A { fn h(&self) -> int { 30 } }
24 fn f<T:Quux + Foo + Bar + Baz>(a: &T) {
25 fail_unless!(a.f() == 10);
26 fail_unless!(a.g() == 20);
27 fail_unless!(a.h() == 30);