@namark that one is simple, why not give this a try:
@Absinthe but... but... my whole point was that it's not simple, and is an ultimate troll kata for TDD... oh well, I tried...
@namark I am doing that other one on REPL.it right now if you care to come join me :)
https://repl.it/join/evjnthdk-reasintper