> In my experience it's also much more compatible with Java/JVM libraries. In Scala that's perfectly possible but leads to very un-idiomatic code, in Kotlin you barely notice.
I think that's actually reversing as Kotlin and Java diverge. E.g. interop with Java Optionals is very easy in Scala (and they obviously correspond directly to Scala Options) whereas it's harder to make them fit with Kotlin nullable types. And Kotlin's "suspend functions" are unlike anything else and mean you have to understand a concept of "inline" that changes the semantics of the function it applies to; e.g. calling a Java function that takes a callback from an async function is straightforward in Scala, but not so much in Kotlin.
