| // run-pass |
| |
| 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); |
| } |