mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 19:43:43 +00:00
29 lines
393 B
Rust
29 lines
393 B
Rust
// run-pass
|
|
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
|
|
}
|
|
}
|