Please note, this blog entry is from a previous course. You might want to check out the current one.
Lecture #9 starts with a demo continuing the dropit app from the previous lecture.
The rest of the lecture is devoted to autolayout and different ways how constraints can be defined followed by another short demonstration.
The code for this lecture is available at github for dropit and attributor as well as from Stanford.
The lecture as well as its slides are available via iTunes called “9. Animation and Autolayout”.