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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
c34b1796 | 11 | |
1a4d82fc | 12 | #![feature(advanced_slice_patterns)] |
c34b1796 | 13 | #![feature(slice_patterns)] |
1a4d82fc JJ |
14 | |
15 | use std::ops::Add; | |
16 | ||
17 | fn foo<T: Add<Output=T> + Clone>([x, y, z]: [T; 3]) -> (T, T, T) { | |
18 | (x.clone(), x.clone() + y.clone(), x + y + z) | |
19 | } | |
20 | fn bar(a: &'static str, b: &'static str) -> [&'static str; 4] { | |
21 | [a, b, b, a] | |
22 | } | |
23 | ||
24 | fn main() { | |
85aaf69f | 25 | assert_eq!(foo([1, 2, 3]), (1, 3, 6)); |
1a4d82fc JJ |
26 | |
27 | let [a, b, c, d] = bar("foo", "bar"); | |
28 | assert_eq!(a, "foo"); | |
29 | assert_eq!(b, "bar"); | |
30 | assert_eq!(c, "bar"); | |
31 | assert_eq!(d, "foo"); | |
32 | ||
33 | let [a, _, _, d] = bar("baz", "foo"); | |
34 | assert_eq!(a, "baz"); | |
35 | assert_eq!(d, "baz"); | |
36 | ||
37 | let out = bar("baz", "foo"); | |
38 | let [a, xs.., d] = out; | |
39 | assert_eq!(a, "baz"); | |
62682a34 | 40 | assert_eq!(xs, ["foo", "foo"]); |
1a4d82fc JJ |
41 | assert_eq!(d, "baz"); |
42 | } |