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iOS 16 Programming for Beginners

You're reading from   iOS 16 Programming for Beginners Kickstart your iOS app development journey with a hands-on guide to Swift 5.7 and Xcode 14

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Product type Paperback
Published in Nov 2022
Publisher Packt
ISBN-13 9781803237046
Length 686 pages
Edition 7th Edition
Languages
Tools
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Authors (2):
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Ahmad Sahar Ahmad Sahar
Author Profile Icon Ahmad Sahar
Ahmad Sahar
Craig Clayton Craig Clayton
Author Profile Icon Craig Clayton
Craig Clayton
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Toc

Table of Contents (34) Chapters Close

Preface 1. Part I: 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. Swift Concurrency 11. Part II: Design
12. Setting Up the User Interface 13. Building Your User Interface 14. Finishing Up Your User Interface 15. Modifying and Configuring Cells 16. Part III: Code
17. Getting Started with MVC and Collection Views 18. Getting Data into Collection Views 19. Getting Started with Table Views 20. Getting Started with MapKit 21. Getting Started with JSON Files 22. Displaying Data in a Static Table View 23. Getting Started with Custom UIControls 24. Getting Started with Cameras and Photo Libraries 25. Understanding Core Data 26. Part IV: Features
27. Getting Started with Mac Catalyst 28. Getting Started with SwiftUI 29. Getting Started with Lock Screen Widgets 30. Getting Started with WeatherKit 31. Testing and Submitting Your App to the App Store 32. Other Books You May Enjoy
33. Index

Understanding Swift Concurrency

In Swift 5.5, Apple has added support for writing asynchronous and parallel code in a structured way.

Asynchronous code allows your app to suspend and resume code. This allows your app to do things like update the user interface while still performing operations like downloading data from the internet.

Parallel code allows your app to run multiple pieces of code simultaneously.

You can find links to all of Apple’s Swift Concurrency videos during WWDC 2021 at: https://developer.apple.com/news/?id=2o3euotz.

You can read Apple’s Swift Concurrency documentation at: https://docs.swift.org/swift-book/LanguageGuide/Concurrency.html.

To give you an idea of how Swift Concurrency works, imagine that you are making a poached egg sandwich for breakfast. Here is one way of doing it:

  1. Put two slices of bread into the toaster.
  2. Wait two minutes until the bread is toasted.
  3. Put...
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