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iOS 13 Programming for Beginners

You're reading from   iOS 13 Programming for Beginners Get started with building iOS apps with Swift 5 and Xcode 11

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Product type Paperback
Published in Jan 2020
Publisher Packt
ISBN-13 9781838821906
Length 822 pages
Edition 4th Edition
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Authors (2):
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Craig Clayton Craig Clayton
Author Profile Icon Craig Clayton
Craig Clayton
Ahmad Sahar Ahmad Sahar
Author Profile Icon Ahmad Sahar
Ahmad Sahar
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Toc

Table of Contents (33) Chapters Close

Preface 1. Section 1: Swift
2. Getting Familiar with Xcode FREE CHAPTER 3. Simple Values and Types 4. Conditionals and Optionals 5. Range Operators and Loops 6. Collection Types 7. Functions and Closures 8. Classes, Structures, and Enumerations 9. Protocols, Extensions, and Error Handling 10. Section 2: Design
11. Setting Up the Basic Structure 12. Building Your App Structure in Storyboard 13. Finishing Up Your App Structure in Storyboard 14. Modifying and Configuring Cells 15. Section 3: Code
16. Getting Started with MVC and Collection Views 17. Getting Data into Collection Views 18. Getting Started with Table Views 19. Getting Started with MapKit 20. Getting Started with JSON Files 21. Displaying Data in a Static Table View 22. Getting Started with Custom UIControls 23. Getting Started with Cameras and Photo Libraries 24. Understanding Core Data 25. Saving and Loading from Core Data 26. Section 4: Features
27. Getting Started with Dark Mode 28. Getting Started with Mac Catalyst 29. Getting Started with SwiftUI 30. Getting Started with Sign In with Apple 31. Testing and Submitting Your App to the App Store 32. Other Books You May Enjoy

Understanding classes

Let's say you want to store the following:

  • Individual employee information for a company
  • Items for sale at an e-commerce site
  • Date on the toys belonging to your children

You would use a class for this.

A class groups together variables or constants used to represent an object. Variables or constants associated with a class are called properties.

A class can also contain functions that perform specific tasks. Functions associated with a class are called methods.

Once you have a class, you can create instances of that class. Imagine you are creating an app for a zoo. If you have an Animal class, you can use instances of that class to represent animals at the zoo. Each of these instances will have different property values.

Here's what a class declaration looks like:

class className {
property1
property2
property3
method1() {
code...
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