26 lines
680 B
Rust
26 lines
680 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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struct Rec {
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f: int
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}
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fn destructure(x: &mut Rec) {
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match *x {
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Rec {f: ref mut f} => *f += 1
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}
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}
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pub fn main() {
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let mut v = Rec {f: 22};
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destructure(&mut v);
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assert!(v.f == 23);
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}
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