Introduction to Object-Oriented Programming

Learn the basic principles of object-oriented programming(OOP): encapsulation, abstraction, inheritance and polymorphism.

Learn how to define structs and classes to model your app’s data, along with some of the differences between these two custom types.

Learn how inheritance and polymorphism enable you to create flexible, reusable code. Create a subclass, define its init method and override an inherited method.

Swift protocols enable you to model behavior that isn’t connected to inheritance. Learn how to make a data type conform to a protocol and create your own protocol for museum objects that are on display.