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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 | 11 | #![feature(unboxed_closures)] |
970d7e83 | 12 | |
1a4d82fc | 13 | use std::ops::FnMut; |
223e47cc | 14 | |
85aaf69f | 15 | fn call_it<F:FnMut(i32,i32)->i32>(y: i32, mut f: F) -> i32 { |
1a4d82fc | 16 | f(2, y) |
223e47cc LB |
17 | } |
18 | ||
19 | pub fn main() { | |
85aaf69f | 20 | let f = |x: i32, y: i32| -> i32 { x + y }; |
1a4d82fc JJ |
21 | let z = call_it(3, f); |
22 | println!("{}", z); | |
23 | assert_eq!(z, 5); | |
223e47cc | 24 | } |
1a4d82fc | 25 |