| // 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. |
| |
| #![allow(non_camel_case_types)] |
| #[derive(Copy, Clone)] |
| struct mytype(Mytype); |
| |
| #[derive(Copy, Clone)] |
| struct Mytype { |
| compute: fn(mytype) -> isize, |
| val: isize, |
| } |
| |
| fn compute(i: mytype) -> isize { |
| let mytype(m) = i; |
| return m.val + 20; |
| } |
| |
| pub fn main() { |
| let myval = mytype(Mytype{compute: compute, val: 30}); |
| println!("{}", compute(myval)); |
| let mytype(m) = myval; |
| assert_eq!((m.compute)(myval), 50); |
| } |
