Kotlin is a statically typed programming language designed to interoperate with Java and fully supported by Google on the Android operating system.Based on Big Nerd Ranch’s popular Kotlin Essentials course, this guide shows you how to work effectively with the Kotlin programming language through hands-on examples and clear explanations of key Kotlin concepts and foundational APIs. Written for Kotlin 1.2, this book will also introduce you to JetBrains’ IntelliJ IDEA development environment.