mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 23:34:48 +00:00
27 lines
319 B
Rust
27 lines
319 B
Rust
//@ run-pass
|
|
|
|
use std::ops::Deref;
|
|
|
|
pub struct Pin<P>(P);
|
|
|
|
impl<P, T> Deref for Pin<P>
|
|
where
|
|
P: Deref<Target=T>,
|
|
{
|
|
type Target = T;
|
|
|
|
fn deref(&self) -> &T {
|
|
&*self.0
|
|
}
|
|
}
|
|
|
|
impl<P> Pin<P> {
|
|
fn poll(self) {}
|
|
}
|
|
|
|
fn main() {
|
|
let mut unit = ();
|
|
let pin = Pin(&mut unit);
|
|
pin.poll();
|
|
}
|