Absolutely. I did a little bit of iOS development at some point and was genuinely shocked by how bad the documentation was and by how often WWDC videos was the best documentation available.
To give a concrete example: At WWDC20 Apple showed off a new Core Data feature called "derived attributes" [1]. Only many months later did they add the bare minimum of written documentation covering a fraction of what was shown off at WWDC [2].
To give a concrete example: At WWDC20 Apple showed off a new Core Data feature called "derived attributes" [1]. Only many months later did they add the bare minimum of written documentation covering a fraction of what was shown off at WWDC [2].
1: https://developer.apple.com/videos/play/wwdc2019/230/ 2: https://developer.apple.com/forums/thread/120159