Kotlin Cookbook : Recettes et exemples pratiques pour développeurs

Introduction

The book "Kotlin Cookbook" (author: Ken Kousen, 2019, 256 pages) is a practical guide that helps developers quickly master the Kotlin language through ready-made recipes and examples. Unlike classic textbooks, this book focuses on solving specific tasks: from basic syntax to advanced topics like coroutines and DSL. The title is fully justified — it is a true "cookbook" for programmers, where each recipe can be applied in a real project.

What the book is about

The book consists of 12 chapters, each dedicated to a specific area of Kotlin. The author systematically covers:

• Syntax basics: functions, classes, data types, nullability.
• Functional programming: lambdas, collections, sequences.
• Working with files, JSON, databases.
• Coroutines and asynchronous programming.
• Creating DSLs (domain-specific languages) in Kotlin.
• Interoperability with Java code and migration from Java to Kotlin.
• Testing and debugging.

Each recipe includes a problem statement, a step-by-step solution, and an explanation of why the code works that way. Many examples are accompanied by comments on performance and best practices.

Who this book is for

The book is intended for developers who already have experience in Java or another object-oriented language. Beginners in programming will find it challenging — the author does not explain basic concepts such as