Written for experienced Java developers, this example-rich book goes further than most language books, covering interesting topics like building DSLs with natural language syntax. Kotlin in Action teaches you to use the Kotlin language for production-quality applications. If you want to really understand Kotlin, this is the book for you. Along the way, you'll get to play with both object-oriented and functional programming. You'll learn everything from language fundamentals to collections, generics, lambdas, and higher-order functions. This hands-on book helps you learn the Kotlin language with a unique method that goes beyond syntax and how-to manuals and teaches you how to think like a great Kotlin developer. Head First Kotlin is a complete introduction to coding in Kotlin. I highly recommend checking out the below resources to learn more about Kotlin and Android.Atomic Kotlin is for both beginning and experienced programmers!įrom Bruce Eckel, author of the multi-award-winning Thinking in C++ and Thinking in Java, and Svetlana Isakova, Kotlin Developer Advocate at JetBrains, comes a book that breaks the language concepts into small, easy-to-digest 'atoms', along with a free course consisting of exercises supported by hints and solutions directly inside IntelliJ IDEA! If you think, some topics have been missed and should have been covered here, do let me know. I have tried to keep this article concise and useful as much as possible.

If the “?” operator is not provided the compiler won’t allow you the assign null to the variable var myString: String? = nullĭefine a static variable using companion object. Initialize a variable to null using the “?” operator. To declare a constant, use the val keyword. To declare a variable, use the var keyword. Classes(constructors, methods, inheritance).In this article, we will cover the minimum necessary topics, that will help us get up and running with Kotlin. Kotlin is a very powerful language with loads of syntactic sugar, which can make you feel a bit overwhelmed. Coming from a Java background, I realized that Kotlin syntax is similar to Java and at the same time it can be very different.

Learning kotlin for android