]>
Commit | Line | Data |
---|---|---|
223e47cc LB |
1 | // Copyright 2012 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. | |
4 | // | |
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. | |
10 | ||
1a4d82fc JJ |
11 | struct closure_box<'a> { |
12 | cl: Box<FnMut() + 'a>, | |
223e47cc LB |
13 | } |
14 | ||
1a4d82fc | 15 | fn box_it<'a>(x: Box<FnMut() + 'a>) -> closure_box<'a> { |
223e47cc LB |
16 | closure_box {cl: x} |
17 | } | |
18 | ||
19 | pub fn main() { | |
c34b1796 | 20 | let mut i = 3; |
970d7e83 | 21 | assert_eq!(i, 3); |
1a4d82fc | 22 | { |
85aaf69f | 23 | let cl = || i += 1; |
c34b1796 | 24 | let mut cl_box = box_it(Box::new(cl)); |
92a42be0 | 25 | (cl_box.cl)(); |
1a4d82fc | 26 | } |
970d7e83 | 27 | assert_eq!(i, 4); |
223e47cc | 28 | } |