I've programmed Scala professionally for the last 4 years. The compiler used to be rather slow, but nowadays, it is fast enough for my taste. Just be careful wi

I've programmed Scala professionally for the last 4 years. The compiler used to be rather slow, but nowadays, it is fast enough for my taste. Just be careful with the cake-pattern, which slows down compilation substantially. Also, I notice that, as I write type-safe code, I don't usually compile that often and, when it compiles, it is likely correct.