Various bits of Scala Hacking / learning doing various things. 

==========
Also includes a bunch of random stuff from:

99 Scala problems at: http://aperiodic.net/phil/scala/s-99/

For the most part, just typing out the code and then
explaining what it does. This is a really effective way of 
discovering what I don't know (50%), figuring out what is 
happening (35%) and writing it out (15%).