> I think that's just a function of the fact that Kotlin's so much less mature all-round You mean "old", not "mature". Scala is old and still pretty immature

> I think that's just a function of the fact that Kotlin's so much less mature all-round You mean "old", not "mature". Scala is old and still pretty immature for its age The Kotlin tooling and IDE support is certainly already way ahead of Scala's after just a year in existence in robustness and functionalities. And I'd rank the two compilers at about the same level in terms of maturity (Kotlin's is much faster than Scala's though).