Right before the festivities start, we've managed to release the next milestone of Kotlin, adding dynamic types and more. Let's see what M10 brings us. (more…)

M9 has arrived and it's bringing many new features and important changes. We've already highlighted these and covered others in detail. Let's dig deeper into some of the other improvements. (more…)

We have a new web site and a new domain! It's Open Source It would make no sense to be developing a language that is Open Source and not having an Open Source web site and documentation. We worked by gradually porting all the old site from the previous platform to Jekyll. The new site is all written in Markdown (actually Kramdown, a flavour of Markdown) and hosted on GitHub. In fact, we've made it really easy to contribute. On nearly every page there is an Edit Page icon: (more…)

It's been a really busy couple of months since the last release and we've been working hard on making substantial improvements, particularly in terms of speed. We have a lot of goodies for this release. Let's get started (more…)

Kotlin M7 is here and with it some long awaited features. Compiler and Language Changes Inline support One of the biggest features of M7 is support for inline functions. Kotlin encourages the use of higher-order functions (some people call this "functional style") which entails extensive use of lambda expressions. Starting with M7, you can declare a higher-order function as "inline" which means that its body will be inlined at the call site along with any lambdas passed to it. This means that the performance penalty of using such functions is next to nothing. For instance, having a for loop

Today we release Kotlin M6.2 which brings some interesting and important features. The newly released IntelliJ IDEA 13 is now supported too. Let’s take a look. (more…)

Two months ago we released M6 and we’re now ready with another update containing a bunch of goodies. (more…)

We’ve reached our sixth milestone, and with it, have some great features in store, both in terms of language improvements as well as tooling. (more…)

Kotlin M5.3 brings support for IntelliJ IDEA 13 and some new features for you to check out. We are moving towards powerful runtime support, including reflection and other framework-enabling features. This milestone marks our first steps in that direction. (more…)

Another update of Kotlin comes out today. Welcome Kotlin M5.2.  (more…)

There have been enough little improvements since Kotlin M5 so that we are rolling them out as M5.1 today. Some of them are not so little in fact, like enabling the use of Scala libraries, such as Akka. This post gives a quick overview of these changes. (more…)

In two weeks from now it will be one year since Kotlin started out as an open source project. It's been a lot of hard work over this time, with a huge help of the community: we received 164 pull requests, which means a contribution every other day or so. Today we make another step and roll out Kotlin M5. This blog post covers the changes introduced in this release. (more…)