Apple's online "Books" for App Development have been updated, and yet the most recent Develop In Swift Fundamentals from July, 2020 seems to be using UIKit and Storyboard rather than SwiftUI. Have I missed something? Is there another Apple Book to teach young programmers that includes SwiftUI? Thanks, Mike

Apple developed Project files from Intro to App Development Lesson 16 on QuestionBot 2 are giving me errors as follows:The project will build and run fine. It will also answer the first question. However, asking a 2nd question causes an error of "Thread 1: signal SIGABRT". This is a file straight from the Apple Tutorial. Suggestions?Project files give warnings for depricated code are given as follows: "The use of Swift 3 @objc inference in Swift 4 mode is deprecated." Suggestions?Thanks,Mike