Function quartic_root

Source Code/19-06.rs:15–18

function that depends on the Number parameter, that must implement the HasSquareRoot trait

(x: Number)

    // function that depends on the Number parameter,
    // that must implement the HasSquareRoot trait
    fn quartic_root<Number>(x: Number) -> Number
    where Number: HasSquareRoot {
        x.sq_root().sq_root()
    }
    // Here that function if instantiated twice, in both cases
    // using types that implement the HasSquareRoot trait
    print!("{} {}",