]>
Commit | Line | Data |
---|---|---|
1a4d82fc JJ |
1 | // Copyright 2014 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. | |
4 | // | |
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. | |
10 | ||
c34b1796 | 11 | // pretty-expanded FIXME #23616 |
1a4d82fc | 12 | |
c34b1796 AL |
13 | pub trait OpInt { fn call(&mut self, isize, isize) -> isize; } |
14 | ||
15 | impl<F> OpInt for F where F: FnMut(isize, isize) -> isize { | |
16 | fn call(&mut self, a:isize, b:isize) -> isize { | |
1a4d82fc JJ |
17 | (*self)(a, b) |
18 | } | |
19 | } | |
20 | ||
c34b1796 | 21 | fn squarei<'a>(x: isize, op: &'a mut OpInt) -> isize { op.call(x, x) } |
1a4d82fc | 22 | |
c34b1796 | 23 | fn muli(x:isize, y:isize) -> isize { x * y } |
1a4d82fc JJ |
24 | |
25 | pub fn main() { | |
85aaf69f | 26 | let mut f = |x, y| muli(x, y); |
1a4d82fc JJ |
27 | { |
28 | let g = &mut f; | |
29 | let h = g as &mut OpInt; | |
30 | squarei(3, h); | |
31 | } | |
32 | } |