Book Image

Mastering iOS 14 Programming - Fourth Edition

By : Mario Eguiluz Alebicto, Chris Barker, Donny Wals
Book Image

Mastering iOS 14 Programming - Fourth Edition

By: Mario Eguiluz Alebicto, Chris Barker, Donny Wals

Overview of this book

Mastering iOS 14 development isn’t a straightforward task, but this book can help you do just that. With the help of Swift 5.3, you’ll not only learn how to program for iOS 14 but also be able to write efficient, readable, and maintainable Swift code that reflects industry best practices. This updated fourth edition of the iOS 14 book will help you to build apps and get to grips with real-world app development flow. You’ll find detailed background information and practical examples that will help you get hands-on with using iOS 14's new features. The book also contains examples that highlight the language changes in Swift 5.3. As you advance through the chapters, you'll see how to apply Dark Mode to your app, understand lists and tables, and use animations effectively. You’ll then create your code using generics, protocols, and extensions and focus on using Core Data, before progressing to perform network calls and update your storage and UI with the help of sample projects. Toward the end, you'll make your apps smarter using machine learning, streamline the flow of your code with the Combine framework, and amaze users by using Vision framework and ARKit 4.0 features. By the end of this iOS development book, you’ll be able to build apps that harness advanced techniques and make the best use of iOS 14’s features.
Table of Contents (22 chapters)

Understanding differences in types

Being aware of the available types in Swift – knowing their similarities and, more importantly, their differences – will help you make better decisions about the way you write your code. The preceding segments have listed several properties of value types and reference types. More specifically, you learned a lot about classes, structs, and enums. Closures are also a reference type because they get passed around by their location in memory, rather than their value, but there isn't much else to say about them in this context.

The most obvious comparison you can make is probably between structs and classes. They look very similar, but they have very different characteristics, as you have already seen. Enums are a special type altogether; they represent a value from a fixed number of possible values but are very similar to structs otherwise.

The most important difference you need to understand is the general difference between...