23 lines
784 B
Rust
23 lines
784 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 each<T>(x: &[T], op: fn(elem: &T) -> bool) {
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uint::range(0, x.len(), |i| op(&x[i]));
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}
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fn main() {
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let x = ~[{mut a: 0}];
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for each(x) |y| {
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let z = &y.a; //~ ERROR illegal borrow unless pure
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x[0].a = 10; //~ NOTE impure due to assigning to mutable field
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log(error, z);
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}
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}
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