Interface HasSquareRoot

Source Code/19-06.rs:4–6

3.1622776601683795 3.1622777*/
fn main() {
    trait HasSquareRoot { // trait declaration
        fn sq_root(self) -> Self;
    }
    impl HasSquareRoot for f32 { // an implementation of the trait
        fn sq_root(self) -> Self { self.sqrt() }
    }