Lesson 12 - Type casting and object hierarchy in Swift
In the previous lesson, Protocols (interfaces) in Swift, we learned about protocols and created a
In today's Swift tutorial, we're going to continue working on this project. We'll also go over type casting and reveal more secrets of the object-oriented programming.
Let's go back to our previous project (the one for protocols) and change the
code in the
main.swift file to have our pterodactyl stored in a
variable of the
let bird : BirdProtocol = Pterodactyl()
We're allowed to do that because the
...End of the preview...
You've come here and that's great! We believe that the first lessons showed you something new and useful
Do you want to continue the course? Go to the premium section.
- Unlimited and permanent access to individual lessons.
- High quality IT knowledge.
- Skills to help you get your dream and well-paid job.
Requested article covers this content:
You'll learn how to cast an instance to another data type using protocols in Swift. You'll also learn to create an object hierarchy.
You gain points by supporting our network. This is done by sending a helpful amount of money to support the site, or by creating content for the network.