Securitoy!  A little Java problem with file watching, JSON parsing, Yammer metrics, and a couple threads.
Compilation warning in Nines C++.
Symmetric Difference in Clojure
Made symmetric-difference Clojure multi-arity
Playing with inc-in, dec-in implementation
Still playing
Discovered with multisets it's not associative.  Added tools.trace and added multi-arity (which is order-dependent for multisets!).