Changes to NSMetadataItem’s Attributes in iOS 9
As iOS 9 came by, two minor bugs appeared in an app that lets it’s users browse the app’s iCloud Drive folder from within the app itself.
UIDocumentPicker and NSFileCoordinator
Using UIDocument you do not need to bother with NSFileCoordinator. But UIDocument is in... well UIKit.
iOS8, Popovers & PassthroughViews
Getting passthroughViews to work on iOS8 when presenting a popover from a UIBarButton.
Open in menu sheet in iOS8
Differences in UIDocumentInteractionController's delegate callbacks in iOS7 and 8
This is a draft.