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1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 fn swap
<F
>(f
: F
) -> Vec
<isize> where F
: FnOnce(Vec
<isize>) -> Vec
<isize> {
14 let x
= vec
!(1, 2, 3);
19 let v
= swap(|mut x
| { x.push(4); x }
);
20 let w
= swap(|mut x
| { x.push(4); x }
);