| // 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. |
| |
| |
| |
| fn pairs<F>(mut it: F) where F: FnMut((isize, isize)) { |
| let mut i: isize = 0; |
| let mut j: isize = 0; |
| while i < 10 { it((i, j)); i += 1; j += i; } |
| } |
| |
| pub fn main() { |
| let mut i: isize = 10; |
| let mut j: isize = 0; |
| pairs(|p| { |
| let (_0, _1) = p; |
| println!("{}", _0); |
| println!("{}", _1); |
| assert_eq!(_0 + 10, i); |
| i += 1; |
| j = _1; |
| }); |
| assert_eq!(j, 45); |
| } |
