Book Image

Mastering Swift 3 - Linux

By : Jon Hoffman
Book Image

Mastering Swift 3 - Linux

By: Jon Hoffman

Overview of this book

Swift is a modern, fast, and safe programming language created by Apple. Writing Swift is interactive and fun, the syntax is concise yet expressive, and the code runs lightning-fast. Swift’s move to open source has been embraced with open arms and has seen increased adoption in the Linux platform. Our book will introduce you to the Swift language, further delving into all the key concepts you need to create applications for desktop, server, and embedded Linux platforms. We will teach you the best practices to design an application with Swift 3 via design patterns and Protocol-Oriented Programming. Further on, you will learn how to catch and respond to errors within your application. When you have gained a strong knowledge of using Swift in Linux, we’ll show you how to build IoT and robotic projects using Swift on single board computers. By the end of the book, you will have a solid understanding of the Swift Language with Linux and will be able to create your own applications with ease.
Table of Contents (24 chapters)
Mastering Swift 3 - Linux
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
2
Learning About Variables, Constants, Strings, and Operators

Inheritance


The concept of inheritance is a basic object-oriented development concept. Inheritance allows a class to be defined as having a certain set of characteristics and then other classes can be derived from that class. The derived class inherits all of the features of the class it is inheriting from (unless the derived class overrides those characteristics) and then usually adds additional characteristics of its own.

With inheritance, we can create what is known as a class hierarchy. In a class hierarchy, the class at the top of the hierarchy is known as the base class and the derived classes are known as subclasses. We are not limited to only creating subclasses from a base class; we can also create subclasses from other subclasses. The class that a subclass is derived from is known as the parent or superclass. In Swift, a class can have only one parent class. This is known as single inheritance.

Note

Inheritance is one of the fundamental differences that separate classes from structures...