8240faf73a
Previously, if you wanted to bind a field mutably or by ref, you had to
do something like Foo { x: ref mut x }. You can now just do
Foo { ref mut x }.
Closes #6137
32 lines
907 B
Rust
32 lines
907 B
Rust
// Copyright 2013 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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pub fn main() {
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struct Foo { x: int, y: int }
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let mut f = Foo { x: 10, y: 0 };
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match f {
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Foo { ref mut x, .. } => *x = 11,
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}
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match f {
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Foo { ref x, ref y } => {
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assert_eq!(f.x, 11);
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assert_eq!(f.y, 0);
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}
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}
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match f {
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Foo { mut x, y: ref mut y } => {
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x = 12;
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*y = 1;
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}
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}
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assert_eq!(f.x, 11);
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assert_eq!(f.y, 1);
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}
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