| // run-pass | |
| trait Stringify { | |
| fn to_string(&self) -> String; | |
| } | |
| impl Stringify for u32 { | |
| fn to_string(&self) -> String { format!("u32: {}", *self) } | |
| } | |
| impl Stringify for f32 { | |
| fn to_string(&self) -> String { format!("f32: {}", *self) } | |
| } | |
| fn print<T: Stringify>(x: T) -> String { | |
| x.to_string() | |
| } | |
| fn main() { | |
| assert_eq!(&print(5), "u32: 5"); | |
| assert_eq!(&print(5.0), "f32: 5"); | |
| } |