The first class I took was Kendall Gelner’s Advanced Debugging class. It was really, really good. I learned about using the Mac “User Interface” instrument to record and play back simulator events for debugging and how to create custom instruments with DTrace. It was a well organized, very useful talk.
Sunday afternoon I took Saul Mora’s Unit Testing that Doesn’t Suck class. It didn’t go as well. The class was predicated on the attendees having GHUnit and MacRuby, and the hotel WiFi completely failed under the load (and not for the last time during the conference). We learned about some of the cool utilities in Saul’s GitHub account, but the class didn’t manage to reach its full potential because it took us so long to get the software prerequisites installed.