The object-oriented way

- [Instructor] Sift lets us design our software…both in a protocol-oriented…and an object-oriented way.…It also supports generic and functional programming,…and often blurs the lines between…the various programming paradigms.…Let's see some benefits of using POP…over the classical object-oriented approach.…Let's assume that we want to implement…UI components which support specific animations…and feature custom rounded corners.…To demonstrate the problem,…we'll start with the classical superclass-based approach.…

Now I'm going to open up Xcode…and create a playground project for this demo.…Blank is good.…Let's put it on the desktop.…I'm going to call it SuperClassWay.…Now let's remove the border plate code…and also the comment.…We only need the UIKit framework.…All right.…I'm going to create a UI view subclass.…Let's call it CustomView.…

It inherits from UIView.…To keep it simple,…we'll support only one kind of animation…in this example.…So let's implement the simple animation…that fades out and then fades back in the view.…