Scala is quite complex, not just the base language, but the standard libraries, the ability to comprehend code by just looking at the lines (implicits!), and th

Scala is quite complex, not just the base language, but the standard libraries, the ability to comprehend code by just looking at the lines (implicits!), and the eventual full implications of features as carried out to the logical conclusion by std libs, etc. I wrote a lengthy email describing a year's worth of experience to scala, and here is an excerpt: If we think that one of the goals of our developers (jr, mid and even sr) is to fully understand as much of their execution environment and stack as possible, the sheer bulk of the language and its standard libraries becomes worrysome. I could probably re-write java.util.concurrent and java collections from whole cloth if necessary, but I could NOT re-write the Scala collection libraries.