The JetBrains Blog

Advent Of Code is currently ongoing and many people all over the world are taking part. We’d like to share some tips and tricks for solving the puzzles in Kotlin – we hope you find some of them helpful! Feel free to add your favorite tips or thoughts in the comments!. If you’re solving the puzzles i…

This post continues our “Idiomatic Kotlin” series and provides the solution for the Advent of Code Day 9* challenge. While solving it, we’ll look into different ways to manipulate lists in Kotlin. Day 9. Encoding error, part I We need to attack a weakness in data encrypted with the eXchang…

We’ve been working on a new K2 Kotlin compiler for quite some time. The new compiler aims to speed up the development of new language features, unify all the platforms Kotlin supports, bring performance improvements, and provide an API for compiler extensions. The development of the Kotlin compil…

Let’s continue our journey of understanding what “idiomatic Kotlin” means and solve one more puzzle from the Advent of Code challenge. The puzzles are independent of each other, so you don’t need to check any of the previous ones we’ve already covered. Simply read through the following solution or w…

Let’s continue learning how to write idiomatic Kotlin code by solving the Advent of Code tasks! Today, we’re discussing the solution for the day 2 task. (more…)…

What’s the best way to learn a language other than writing some code with it? Solving fun and short tasks like the ones from Advent of Code might be a great opportunity to practice your language skills, and you can learn a lot if you compare your solutions with how others have solved the same proble…

We’re planning to add new language features in Kotlin 1.5, and you can already try them out in Kotlin 1.4.30: Stabilization of inline value classes Experimental support for JVM records Experimental support for sealed interfaces and other improvements for sealed classes To try these new featu…

Today we’re releasing Kotlin 1.4.0! Over the past years, we’ve been working hard on making Kotlin a programming language that is fun, enjoyable, and productive to work with. To continue our pursuit of this goal with this version of Kotlin, we put a lot of energy and effort into improving the performance and quality of Kotlin and its tooling. We are also excited to announce support for several new language features, including the long-awaited SAM conversions for Kotlin interfaces.

We continue to highlight the upcoming changes in 1.4 release. In this blogpost, we want to describe a couple of important features related to coroutines: New functionality to conveniently debug coroutines The ability to define deep recursive functions These changes are already available for you to…

In Kotlin 1.4, we’re adding new experimental ways for generating default methods in interfaces in the bytecode for the Java 8 target. Later, we’re going to be deprecating the @JvmDefault annotation in favor of generating all the method bodies in interfaces directly when the code is compiled in a spe…

JetBrains and Touchlab partner to drive Kotlin Multiplatform adoption in 2020 At JetBrains, we’re very delighted to partner with our good friends at Touchlab to increase the adoption of Kotlin Multiplatform Mobile technology in 2020 and beyond. Touchlab has released a toolkit for getting started wit…