[ExpiredLink]

Scala has been on the market (i.e. promoted to a broader audience) since 2005 or so. There is plenty of evidence now that Scala is more complex than Java and less suitable for enterprise applications. Despite the fanboy-ism here and on reddit: the Scala hype is over. Definitly.

[microtonal]

Having used Scala some myself, I wouldn't be surprised that if we look back in ten years, we have come to the conclusion that Scala is the C++ of modern times. It tries to support relatively opposing paradigms (functional programming - object oriented/imperative programming), has a very extensive type system, and drags in a lot of historical baggage via Java.

I guess everyone has encountered the C++ is 'C with better strings and arrays'-type of programmer who doesn't use RAII or the STL. Or the template-fanatic programmer that wants to drag in template meta-programming into every corner of the project. Or the STL fanatic that wants to replace every for-loop by a function in std::algorithm, even if there is no appropriate fit or it requires building a bunch of stateful function objects (thank god we have closures now). Etc.

If projects do not impose serious restrictions, such a broad language will quickly become an incomprehensible mess.

Being a recovering C++ fanatic myself, I believe more in smaller languages try to solve a particular problem now. For instance, take Prolog, it's a beautiful language for what it is aimed at: logic programming. All the weird object-oriented Prolog experiments have died out by now, and it's a language that you use when you want to solve a particular kind of problem.

[Evbn]

Yes. Scala is C++ of the JVM.