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.
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)]
13 #![feature(unboxed_closures)]
17 fn make_adder(x: i32) -> Box<FnMut(i32)->i32+'static> {
18 (box move |y: i32| -> i32 { x + y }) as
19 Box<FnMut(i32)->i32+'static>
23 let mut adder = make_adder(3);