| // 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. |
| |
| |
| #![feature(slice_patterns)] |
| |
| fn main() { |
| let mut x: &[_] = &[1, 2, 3, 4]; |
| |
| let mut result = vec!(); |
| loop { |
| x = match x { |
| [1, n, 3, rest..] => { |
| result.push(n); |
| rest |
| } |
| [n, rest..] => { |
| result.push(n); |
| rest |
| } |
| [] => |
| break |
| } |
| } |
| assert_eq!(result, [2, 4]); |
| } |
