Preface

Kotlin is a relatively new language that is gaining popularity rapidly, thanks to its numerous unique features that increase developer productivity. It is primarily used for mobile (Android) and server-side (backend) development but can be used anywhere Java is used. Thanks to its other compiler, which transforms it into JavaScript, it can even be used for frontend web development. This book targets newcomers to the language and tries to bring them to intermediate-advanced levels of Kotlin knowledge.