Kotlin Resources

A book for mastering Kotlin language.

There are more than 2,500 programming languages in existence today. Where do all these languages come from? Learn more about the fourth generation with Go, Rust, Kotlin and Elixir.

LiveVideo course about writing Kotling code in Spring Boot.

LiveVideo course about functional and object-oriented programming and building Android apps in Kotlin.

A book about using Kotlin language for production-quality applications. Written for experienced Java developers.

Kotlin typing system is amazingly designed. It gives us very comfortable nullability support, type inference, universal guards, and much more.

Learn about new and powerful MockK features that let you improve your unit tests and mock whatever you need.

How to make a random instance of any class in #kotlin? Using a lot of reflection and a bit of hacking. Enjoy this step-by-step explanation by Marcin Moskala

Java Vs Kotlin: Is It Time To Switch Over? Know the Pros & Cons of Kotlin Over Java.

An example of a polymorphic approach using Arrow

How to get the best performance out of Kotlin's new, experimental inline classes feature by understanding when they're inlined and when they're autoboxed.

Bug reporting is a vital a part of any mobile app development process and can easily be managed by following these mobile app bug reporting best practices.

How to configure your IDE to use Kotlin 1.3 early access so that you can start exploring inline classes and other new features.

An introduction to Kotlin's inline classes - a new, experimental feature that can help improve your app's performance.

This tutorial shows you how to build a location-sharing app for Android using Kotlin. The app has a Node.js backend. Users can share their location and see where their friends are.

Learn to build a chat app for Android with Kotlin

Kotlin's type aliases give you a quick and easy way to create simple, concise, and domain-specific names for types. This guide covers all of the essential concepts, with plenty of examples to help you level up your Kotlin game.

In Kotlin, as opposed to Java, there is no established standard when it comes to logging. JetBrains didn't provide any opinionated way. But the community does not disappoint. There are few different approaches that allows developers to do it properly.

The third and final article in a series on variance in Kotlin. This one covers what star-projections are, and why they work like they do - from the inside out.

Kotlin Functions Primer - Learn how to define and call functions, how to use default and named arguments, how to define and call functions with a variable number of arguments, how to define top-level functions, member functions, local/nested functions.

In this article, You'll learn how to declare properties inside a Kotlin class, what are backing fields, how getters and setters work, and how to define a custom getter and setter for the properties of a class.

We try to help people to get best courses and tutorials on various topics like Kotlin. It is absolutely free to use and you can also upvote and downvote courses depending upon your experience which will help future learners.

Tips on how you can use Vert.X to design, build and deploy your microservices with Cloud 66 backed by Kubernetes. We dive into a Docker-based development flow.

* You can use Vert.x with multiple languages including Java, JavaScript, Groovy, Ruby, Ceylon, Scala and Kotlin.

Discover the latest Kotlin articles, tutorials, libraries, and code snippets from around the web to keep your programming skills sharp

Kotlin is a programming language developed by JetBrains, the same company that has built world-class IDEs like IntelliJ IDEA, PhpStorm, PyCharm, ReSharper etc.
It runs on the Java Virtual Machine (JVM), and can also be compiled to JavaScript and Machine Code.
My goal in this blog is to develop a comprehensive set of tutorials on Kotlin that is easy to understand for beginners and works as a great reference for experienced developers.

Classes and Objects are the central concepts in any Object Oriented Programming(OOP) language. In this article, you'll learn how to define classes in Kotlin. You'll also learn how to create and initialize objects using a primary constructor, secondary constructor and initializer blocks.

Discover what is Redux architecture and how it can be applied to Android applications.