| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![feature(default_type_parameter_fallback)] |
| |
| // An example from the RFC |
| trait Foo { fn takes_foo(&self); } |
| trait Bar { } |
| |
| impl<T:Bar=usize> Foo for Vec<T> { |
| fn takes_foo(&self) {} |
| } |
| |
| impl Bar for usize {} |
| |
| fn main() { |
| let x = Vec::new(); // x: Vec<$0> |
| x.takes_foo(); // adds oblig Vec<$0> : Foo |
| } |
