blob: 1573c0234a6e4489bfc1098c448b72011978c166 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::fmt::Debug;
use std::default::Default;
trait MyTrait<T> {
fn get(&self) -> T;
}
impl<T> MyTrait<T> for T
where T : Default
{
fn get(&self) -> T {
Default::default()
}
}
#[derive(Copy, Clone)]
struct MyType {
dummy: usize
}
impl MyTrait<usize> for MyType {
fn get(&self) -> usize { self.dummy }
}
fn test_eq<T,M>(m: M, v: T)
where T : Eq + Debug,
M : MyTrait<T>
{
assert_eq!(m.get(), v);
}
pub fn main() {
test_eq(22_usize, 0_usize);
let value = MyType { dummy: 256 + 22 };
test_eq(value, value.dummy);
}
|
