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1a4d82fc | 1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
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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 | // Test that you can supply `&F` where `F: Fn()`. |
223e47cc | 12 | |
5bcae85e | 13 | #![feature(lang_items)] |
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14 | |
15 | fn a<F:Fn() -> i32>(f: F) -> i32 { | |
16 | f() | |
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17 | } |
18 | ||
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19 | fn b(f: &Fn() -> i32) -> i32 { |
20 | a(f) | |
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21 | } |
22 | ||
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23 | fn c<F:Fn() -> i32>(f: &F) -> i32 { |
24 | a(f) | |
223e47cc | 25 | } |
1a4d82fc | 26 | |
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27 | fn main() { |
28 | let z: isize = 7; | |
29 | ||
30 | let x = b(&|| 22); | |
31 | assert_eq!(x, 22); | |
32 | ||
33 | let x = c(&|| 22); | |
34 | assert_eq!(x, 22); | |
35 | } |