The other day I gave a talk on a tech conference about my experience with Scala. Ironically, just two weeks after I wrote that I don’t like Scala, I started working with it on a daily basis, so I now have a better overview. And it’s not all black and white, but many of my arguments still hold.
You can check the slides (the talk was not in English). And I’d like to emphasize the final conclusion point: don’t give the users of your language, API or product all the possible options – they will misuse them.