3 fn to_string(&self) -> String;
6 impl Stringify for u32 {
7 fn to_string(&self) -> String { format!("u32: {}", *self) }
10 impl Stringify for f32 {
11 fn to_string(&self) -> String { format!("f32: {}", *self) }
14 fn print<T: Stringify>(x: T) -> String {
19 assert_eq!(&print(5), "u32: 5");
20 assert_eq!(&print(5.0), "f32: 5");