1.1 For Swift Programmers
This book has been designed to address the needs of both existing Swift programmers and those who are new to both Swift and iOS app development. If you are familiar with the Swift 5.3 programming language, you can probably skip the Swift specific chapters. If you are not yet familiar with the SwiftUI specific language features of Swift, however, we recommend that you at least read the sections covering implicit returns from single expressions, opaque return types and property wrappers. These features are central to the implementation and understanding of SwiftUI.