26 lines
718 B
Rust
26 lines
718 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 borrow(v: &int, f: |x: &int|) {
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f(v);
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}
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fn box_imm() {
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let mut v = ~3;
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borrow(v, |w| {
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v = ~4; //~ ERROR cannot assign to `v` because it is borrowed
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assert_eq!(*v, 3);
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assert_eq!(*w, 4);
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})
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}
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fn main() {
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}
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