| // 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. |
| |
| fn main() { |
| let x = X(15); |
| let y = x.foo(); |
| println!("{:?}",y); |
| } |
| |
| trait Foo |
| where for<'a> &'a Self: Bar |
| { |
| fn foo<'a>(&'a self) -> <&'a Self as Bar>::Output; |
| } |
| |
| trait Bar { |
| type Output; |
| } |
| |
| struct X(i32); |
| |
| impl<'a> Bar for &'a X { |
| type Output = &'a i32; |
| } |
| |
| impl Foo for X { |
| fn foo<'a>(&'a self) -> <&'a Self as Bar>::Output { |
| &self.0 |
| } |
| } |
