| // Copyright 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. |
| |
| fn each<'a,T,F:FnMut(&'a T)>(x: &'a [T], mut f: F) { |
| for val in x { |
| f(val) |
| } |
| } |
| |
| fn main() { |
| let mut sum = 0; |
| let elems = [ 1, 2, 3, 4, 5 ]; |
| each(&elems, |val: &usize| sum += *val); |
| assert_eq!(sum, 15); |
| } |
