It isn't what Android devs say, always complaining about compilation times, IDE freeze ups with.
InteliJ is partially written in Kotlin, unless they decided to port everything on top of Kotlin/Native.
As for why Kotlin exists at all,
> And while the development tools for Kotlin itself are going to be free and open-source, the support for the enterprise development frameworks and tools will remain part of IntelliJ IDEA Ultimate, the commercial version of the IDE. And of course the framework support will be fully integrated with Kotlin.
InteliJ is partially written in Kotlin, unless they decided to port everything on top of Kotlin/Native.
As for why Kotlin exists at all,
> And while the development tools for Kotlin itself are going to be free and open-source, the support for the enterprise development frameworks and tools will remain part of IntelliJ IDEA Ultimate, the commercial version of the IDE. And of course the framework support will be fully integrated with Kotlin.
https://blog.jetbrains.com/kotlin/2011/08/why-jetbrains-need...