If you know React programming, you’ll find SwiftUI familiar. You don’t have to specify how the UI moves between those states - it takes care of that for you. With SwiftUI, you build user interfaces using Swift code with a declarative approach, which means that you specify how the UI should look and behave under different states. SwiftUI is a user interface toolkit and “the new way” for building apps that Apple introduced in 2019.
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Look for the 🛠 emoji if you’d like to skim through the content while focusing on the build and execution steps.