090040bf40
for `~str`/`~[]`. Note that `~self` still remains, since I forgot to add support for `Box<self>` before the snapshot. How to update your code: * Instead of `~EXPR`, you should write `box EXPR`. * Instead of `~TYPE`, you should write `Box<Type>`. * Instead of `~PATTERN`, you should write `box PATTERN`. [breaking-change]
32 lines
756 B
Rust
32 lines
756 B
Rust
// Copyright 2013 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.
|
|
|
|
|
|
struct X {
|
|
a: int
|
|
}
|
|
|
|
trait Changer {
|
|
fn change(mut ~self) -> Box<Self>;
|
|
}
|
|
|
|
impl Changer for X {
|
|
fn change(mut ~self) -> Box<X> {
|
|
self.a = 55;
|
|
self
|
|
}
|
|
}
|
|
|
|
pub fn main() {
|
|
let x = box X { a: 32 };
|
|
let new_x = x.change();
|
|
assert_eq!(new_x.a, 55);
|
|
}
|