rust/src/test/run-pass/kindck-owned-trait-contains-1.rs
2013-03-29 16:39:08 -07:00

27 lines
813 B
Rust

// Copyright 2012 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.
trait repeat<A> { fn get(&self) -> A; }
impl<A:Copy> repeat<A> for @A {
fn get(&self) -> A { **self }
}
fn repeater<A:Copy>(v: @A) -> @repeat<A> {
// Note: owned kind is not necessary as A appears in the trait type
@v as @repeat<A> // No
}
pub fn main() {
let x = &3;
let y = repeater(@x);
assert!(*x == *(y.get()));
}