51 lines
1.2 KiB
Rust
51 lines
1.2 KiB
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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use std::task;
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fn user(_i: int) {}
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fn foo() {
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// Here, i is *moved* into the closure: Not actually OK
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let mut i = 0;
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do task::spawn {
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user(i); //~ ERROR mutable variables cannot be implicitly captured
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}
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}
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fn bar() {
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// Here, i would be implicitly *copied* but it
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// is mutable: bad
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let mut i = 0;
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while i < 10 {
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do task::spawn {
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user(i); //~ ERROR mutable variables cannot be implicitly captured
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}
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i += 1;
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}
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}
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fn car() {
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// Here, i is mutable, but *explicitly* shadowed copied:
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let mut i = 0;
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while i < 10 {
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{
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let i = i;
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do task::spawn {
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user(i);
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}
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}
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i += 1;
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}
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}
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fn main() {
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}
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