2012-12-10 19:32:48 -06:00
|
|
|
// 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.
|
|
|
|
|
2013-01-26 00:46:32 -06:00
|
|
|
struct Rec {
|
2012-08-06 09:20:23 -05:00
|
|
|
f: int
|
2013-01-26 00:46:32 -06:00
|
|
|
}
|
2012-08-06 09:20:23 -05:00
|
|
|
|
2013-01-26 00:46:32 -06:00
|
|
|
fn destructure(x: &mut Rec) {
|
2012-08-06 18:13:52 -05:00
|
|
|
match *x {
|
2013-01-26 00:46:32 -06:00
|
|
|
Rec {f: ref mut f} => *f += 1
|
2012-08-06 09:20:23 -05:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn main() {
|
2013-01-26 00:46:32 -06:00
|
|
|
let mut v = Rec {f: 22};
|
2012-08-06 09:20:23 -05:00
|
|
|
destructure(&mut v);
|
|
|
|
assert v.f == 23;
|
2012-08-06 18:13:52 -05:00
|
|
|
}
|