| // 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. |
| |
| use std::ops::FnMut; |
| |
| fn call_it<F:FnMut(i32,i32)->i32>(y: i32, mut f: F) -> i32 { |
| f(2, y) |
| } |
| |
| pub fn main() { |
| let f = |x: i32, y: i32| -> i32 { x + y }; |
| let z = call_it(3, f); |
| println!("{}", z); |
| assert_eq!(z, 5); |
| } |
