1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![allow(unknown_features)]
12 #![feature(box_syntax)]
18 trait Changer : Sized {
19 fn change(mut self) -> Self {
24 fn change_again(mut self: Box<Self>) -> Box<Self> {
29 fn set_to(&mut self, a: int);
33 fn set_to(&mut self, a: int) {
40 let new_x = x.change();
41 assert_eq!(new_x.a, 55);
44 let new_x = x.change_again();
45 assert_eq!(new_x.a, 45);