CS193p Winter 2016-17 (based on iOS 10 and Swift 3) will be available on iTunesU starting a few weeks after the beginning of the quarter.
CS193p was last offered (based on iOS 9 and Swift 2.2) in Spring 2015-16. It is available on iTunesU.
The website you are looking at (http://cs193p.stanford.edu) was retired a few years ago, but evidently iTunesU folks still need it for demo code downloads, so that code for last Spring's iOS 9/Swift 2.2 version (not including the Calculator demos) is posted below. Swift 3 has since been released and so the demo code below will have some incompatibilities that you'll have to resolve.
Please do not repost from this website on other websites--these downloads are for the individual use of those of you watching the course on iTunesU. Enjoy!
Here is the code from today's section.
Note that the face detection only works for one (landscape) orientation of the device.
Here is the modified Psychologist code example that I used to illustrate finding leaks and using the static analysis tool in Xcode.
Here are the slides from the section on 4/8.
Also attached is the XCode Project for the debugging example we covered. There are several bugs in this code so it does not work (that is intentional) ... see if you can find the bugs yourself. If not, the readme.txt contains a list of bugs.