| // Copyright 2012-2014 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. |
| |
| |
| |
| struct X { |
| x: isize |
| } |
| |
| fn f1(a: &mut X, b: &mut isize, c: isize) -> isize { |
| let r = a.x + *b + c; |
| a.x = 0; |
| *b = 10; |
| return r; |
| } |
| |
| fn f2<F>(a: isize, f: F) -> isize where F: FnOnce(isize) { f(1); return a; } |
| |
| pub fn main() { |
| let mut a = X {x: 1}; |
| let mut b = 2; |
| let c = 3; |
| assert_eq!(f1(&mut a, &mut b, c), 6); |
| assert_eq!(a.x, 0); |
| assert_eq!(b, 10); |
| assert_eq!(f2(a.x, |_| a.x = 50), 0); |
| assert_eq!(a.x, 50); |
| } |
