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1 | // Copyright 2012 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 | ||
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11 | // pretty-expanded FIXME #23616 |
12 | ||
9cc50fc6 | 13 | pub trait NumCast: Sized { |
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14 | fn from(i: i32) -> Option<Self>; |
15 | } | |
223e47cc | 16 | |
1a4d82fc | 17 | pub trait NumExt: NumCast + PartialOrd { } |
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18 | |
19 | fn greater_than_one<T:NumExt>(n: &T) -> bool { | |
85aaf69f | 20 | *n > NumCast::from(1).unwrap() |
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21 | } |
22 | ||
23 | pub fn main() {} |