Require type and protocol for method parameter

Question

I am playing around with Swift and am stumbling over the following problem: given I have the predefined class Animal:

//Predefined classes
class         


        

Answer 1

Swift 3 version

In Swift 3 the structure changed a bit. That´s why you will get a deprecation warning for the old structure. Here´s the new one:

For functions the expected protocols are located after the parameters definition of the function. Example:

func addAnimal(animal: T) where T: Nameable

For enums or classes the structure also changed

enum ZooEnum where T: Nameable 

class Zoo where T: Nameable