> First of all, the things he shows aren't inherently complex: adding an additional function to the existing collections library is something that's possible in

> First of all, the things he shows aren't inherently complex: adding an additional function to the existing collections library is something that's possible in other languages in less confusing ways > "I want to add a method to all my collections that works like the existing methods," in Scala it requires an understanding of a huge number of complicated intersecting concepts, whereas in other languages it doesn't. Sorry, but there is a bit more to it. I will gladly accept a link to a language which does all the stuff he was trying to do, but until then I'm not convinced at all.