Xcode Tools Sensei, a digital guide for Mac and iOS development tools, has been updated to cover Xcode 4.2. The new material in the book includes storyboarding for iOS apps, OpenGL ES frame capture, and automatic reference counting. Xcode Tools Sensei also teaches readers how to profile code, as well as check for memory leaks with instruments. The book's introduction and first chapter can be downloaded for free from the publisher's website, while the full book is sold for $20.
