6876916a45
With the old `for` gone, this behaviour is no longer conflicting with that use of `return` in closures, and this allows shortcircuiting in a closure.
42 lines
1015 B
Rust
42 lines
1015 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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// just to make sure that `return` is only returning from the closure,
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// not the surrounding function.
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static mut calls: uint = 0;
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fn surrounding() {
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let return_works = |n: int| {
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unsafe { calls += 1 }
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if n >= 0 { return; }
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fail!()
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};
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return_works(10);
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return_works(20);
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let return_works_proc = proc(n: int) {
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unsafe { calls += 1 }
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if n >= 0 { return; }
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fail!()
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};
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return_works_proc(10);
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}
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pub fn main() {
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surrounding();
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assert_eq!(unsafe {calls}, 3);
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}
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