Kotlin is a powerful language, largely thanks to its expressive syntax, intuitive and null-safe type system, and great tooling support. In this book, we cover the essentials of Kotlin, so you can start developing with this amazing programming language. We show nearly everything you need to know in clear and executable code examples.

If you are interested in paperback, you can purchase it here.

This book is about functional programming features in Kotlin. It first covers the essentials, and then it builds on them: it presents important and practical topics like collection processing, function references, scope functions, DSL usage and creation, and context receivers.

This position is perfect for developers who know the basics of Kotlin and want to learn well a bit more advanced features. It is a natural continuation of Kotlin for developers: Essentials.

It is based on the second day of the Kotlin for developers workshop and serves as one of the official workbooks for the workshop.

If you are interested in paperback, you can purchase it here.

You can be a developer without knowing those topics, even a good one, but at some point, is will start blocking you. You likely use on daily basis tools made using features described in this book - libraries based on annotation processing or compiler plugins, classes using variance modifiers, functions with contracts, and property delegates. But do you understand those features? Would you be able to implement similar tools yourself? Would you be able to analyze and debug them? This book is about to change it. It concentrates explicitly on the most advanced Kotlin topics, which are often not well understood even by senior Kotlin developers. It should equip you with the knowledge and show you possibilities you haven't seen before. I hope you enjoy it as much as I enjoyed writing it. 

This is a practical book. It shows everything by examples and focuses on real-life use cases. As this technology is already widely used on Android and backend applications, we will see how we can use it there and what the best practices are.

If you are interested in paperback, you can purchase it here.

Kotlin is a powerful and pragmatic language, but it's not enough to know about its features. We also need to know when they should be used and in what way. This book is a guide for Kotlin developers on how to become excellent Kotlin developers. It presents and explains in-depth the best practices for Kotlin development. Each item is presented as a clear rule of thumb, supported by detailed explanations and practical examples.

If you are interested in paperback, you can purchase it here.