[agentgt]

What makes me nervous about Kotlin is it could become Scala (or even Groovy) again.

Don't get me wrong I'm a huge fan of Scala and highly expressive language but on the other hand there is something to be said for simple consistent and not that expressive languages. It pains me to say it but less choices and not more.

That is I want Kotlin, or Scala, or Java to be a little more like Go (and I'm not a fan of Go). The development consistency with Go with gofmt and other build tools as well as having fairly good default concurrency (Java as a myriad of concurrency practices: eg. streams, actors, rx) help ramp up time.

The ramp up time for all JVM languages is pretty awful compared to C# or Go. There are so many tools and libraries and different way people do things. I love the choices but it really hurts bringing on new talent.

Luckily Kotlin is backed by a tools provider so perhaps extreme consistency will happen but when I look at the Spring 5.0 examples (also on the HN right now) I get nervous and think oh this is becoming Scala academic DSL confusion all over.