34 lines
906 B
Rust
34 lines
906 B
Rust
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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(slice_patterns)]
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fn main() {
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let mut x: &[_] = &[1, 2, 3, 4];
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let mut result = vec!();
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loop {
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x = match *x {
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[1, n, 3, ref rest..] => {
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result.push(n);
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rest
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}
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[n, ref rest..] => {
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result.push(n);
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rest
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}
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[] =>
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break
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}
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}
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assert_eq!(result, [2, 4]);
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}
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