When you use the
static varkeywords to declare a type property:You cannot override the type property in the subclasses.
You can override the type property in the subclasses.
You can override the type property only in the superclass.
When you use the
class varkeywords to declare a type property:You cannot override the type property in the subclasses.
You can override the type property in the subclasses.
You can override the type property only in the superclass.
When you use the
finalkeyword to declare an instance method:You cannot override the instance method in the subclasses.
You can override the instance method in the subclasses.
You can override the instance method only once, that is, in just one subclass.
Polymorphism means:
We can call the same method--that is, the same name and arguments--in instances of classes that aren't included in the same hierarchy tree.
We can use the same method--that is, the same name and arguments--to cause different things to happen according...
Swift 3 Object-Oriented Programming - Second Edition
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Swift 3 Object-Oriented Programming - Second Edition
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Overview of this book
Swift has quickly become one of the most-liked languages and developers’ de-facto choice when building applications that target iOS and macOS. In the new version, the Swift team wants to take its adoption to the next level by making it available for new platforms and audiences.
This book introduces the object-oriented paradigm and its implementation in the Swift 3 programming language to help you understand how real-world objects can become part of fundamental reusable elements in the code. This book is developed with XCode 8.x and covers all the enhancements included in Swift 3.0. In addition, we teach you to run most of the examples with the Swift REPL available on macOS and Linux, and with a Web-based Swift sandbox developed by IBM capable of running on any web browser, including Windows and mobile devices.
You will organize data in blueprints that generate instances. You’ll work with examples so you understand how to encapsulate and hide data by working with properties and access control. Then, you’ll get to grips with complex scenarios where you use instances that belong to more than one blueprint. You’ll discover the power of contract programming and parametric polymorphism. You’ll combine generic code with inheritance and multiple inheritance. Later, you’ll see how to combine functional programming with object-oriented programming and find out how to refactor your existing code for easy maintenance.
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Current Title:
Swift 3 Object-Oriented Programming - Second Edition
Table of Contents (17 chapters)
Swift 3 ObjectOriented Programming - Second Edition
Credits
About the Author
Acknowledgement
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Free Chapter
Objects from the Real World to the Playground
Structures, Classes, and Instances
Encapsulation of Data with Properties
Inheritance, Abstraction, and Specialization
Contract Programming with Protocols
Maximization of Code Reuse with Generic Code
Object-Oriented and Functional Programming
Extending and Building Object-Oriented Code
Exercise Answers
Customer Reviews