23 lines
750 B
Rust
23 lines
750 B
Rust
// Copyright 2012 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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fn swap<T>(v: &mut [T], i: int, j: int) { v[i] <-> v[j]; }
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pub fn main() {
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let mut a: ~[int] = ~[0, 1, 2, 3, 4, 5, 6];
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swap(a, 2, 4);
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assert!((a[2] == 4));
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assert!((a[4] == 2));
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let mut n = 42;
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n <-> a[0];
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assert!((a[0] == 42));
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assert!((n == 0));
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}
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