Book Image

iOS 15 Programming for Beginners - Sixth Edition

By : Ahmad Sahar, Craig Clayton
5 (1)
Book Image

iOS 15 Programming for Beginners - Sixth Edition

5 (1)
By: Ahmad Sahar, Craig Clayton

Overview of this book

With almost 2 million apps on the App Store, iOS mobile apps continue to be incredibly popular. Anyone can reach millions of customers around the world by publishing their apps on the App Store. iOS 15 Programming for Beginners is a comprehensive introduction for those who are new to iOS. It covers the entire process of learning the Swift language, writing your own app, and publishing it on the App Store. Complete with hands-on tutorials, projects, and self-assessment questions, this easy-to-follow guide will help you get well-versed with the Swift language to build your apps and introduce exciting new technologies that you can incorporate into your apps. You'll learn how to publish iOS apps and work with Mac Catalyst, SharePlay, SwiftUI, Swift concurrency, and much more. By the end of this iOS development book, you'll have the knowledge and skills to write and publish interesting apps, and more importantly, to use the online resources available to enhance your app development journey.
Table of Contents (32 chapters)
1
Part 1: Swift
10
Part 2: Design
15
Part 3: Code
25
Part 4: Features

Chapter 24: Getting Started with Swift Concurrency

Apple introduced Swift Concurrency during WWDC2021, which adds support for structured asynchronous and parallel programming to Swift 5.5. This allows you to write concurrent code which is more readable and easier to understand.

In this chapter, you will learn the basic concepts of Swift Concurrency. Next, you will examine an app without concurrency and explore its issues. After that, you will use async/await to implement concurrency in the app. Next, you'll make your app more efficient by using async-let. Finally, you'll modify the RestaurantListViewController class in your Let's Eat app to use async/await for loading restaurant images.

By the end of this chapter, you'll have learned the basics on how Swift Concurrency works, and how to update your own apps to use it.

The following topics will be covered:

  • Understanding Swift Concurrency
  • Examining an app without concurrency
  • Updating the...