| // 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 { |
| fn get(&self) -> Self; |
| } |
| |
| impl<T> MyTrait for T |
| where T : Default |
| { |
| fn get(&self) -> T { |
| Default::default() |
| } |
| } |
| |
| #[derive(Clone, Copy, Debug, PartialEq)] |
| struct MyType { |
| dummy: usize |
| } |
| |
| impl MyTrait for MyType { |
| fn get(&self) -> MyType { (*self).clone() } |
| } |
| |
| fn test_eq<M>(m: M, n: M) |
| where M : MyTrait + Debug + PartialEq |
| { |
| assert_eq!(m.get(), n); |
| } |
| |
| pub fn main() { |
| test_eq(0_usize, 0_usize); |
| |
| let value = MyType { dummy: 256 + 22 }; |
| test_eq(value, value); |
| } |