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// 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
}
}
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