WWDC 2011 Sample Code [closed]
Sample code is now on the WWDC 2011 Session Videos page; if you expand a session, "Sample Code" links will be under the "Presentation Slides" link. Not every session had sample code.
As it happens, the links in some presentation slides were attendee-centric, and haven't aged as well as they could, but you can find the sample code next to the slides or video.
At this time, there is no sample code package, there is a script on GitHub to download all the session material: https://github.com/davidcann/WWDC2011-Downloader but you need to be an attendee to use it.