Cannot learn from the documentation - sorry newbies

I feel sorry for new iOS/OSX developers since the new documentation format has lost the ability to learn from it. I’m glad I learned Obj-c on Xcode v5 & v6 since that documentation was a pinicle of perfection. The UX is more-pretty than ever before, but at the cost of cutting needed information and producing what I’d call information dead-ends. For instance, UIView inherits from what classes? (ANS: look in the old docs). What is UIOrangeColor? (ANS: just a property; the old doc used to even say the color components and list sibiling properties). Coupling of enum types and subproperties siblings, searching the header files is now the best way to find the answer. The side panel index is defunct waste of pixel space: Dynamically show me where in this useless index I am currently viewing?

Den L about Xcode, v8.1