> I think compiling a large codebase from scratch would be quite slow, and slower than templated C++ It very much depends on which features of Scala you use. I

> I think compiling a large codebase from scratch would be quite slow, and slower than templated C++ It very much depends on which features of Scala you use. If you restrict yourself to the features available in Kotlin or other "better Java" languages, Scala compiler isn't much slower. Where Scala compiler gets really slow are implicits - so if you try to write Scala as if it were Haskell then you are probably in trouble.