Thanks for this. I also put together a Clojure example based on a starting point someone else shared on Github.

Clojure: https://gist.github.com/amontalenti/8117294

It is interesting to see small implementations like these - you can get a feel for a language in seconds.

https://gist.github.com/wting/77c9742fa1169179235f

I believe you could easily get the Scala version to be just as short, in terms of lines, as the Clojure version.