To use this book, you need to be familiar with Kotlin, including classes and objects, interfaces, listeners, packages, inner classes, object expressions, and generic classes.

If these concepts do not ring a bell, you will be in the weeds by page 2. Start instead with an introductory Kotlin book and return to this book afterward. There are many excellent introductory books available, so you can choose one based on your programming experience and learning style. May we recommend Kotlin Programming: The Big Nerd Ranch Guide?

If you are comfortable with object-oriented programming concepts, but your Kotlin is a little shaky, you will probably be OK. We will provide some brief explanations about Kotlin specifics throughout ...

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