- iOS 4.0+
- macOS 10.6+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
String Enumeration Reverse
Causes the enumeration to occur in reverse.
String Enumeration Longest Effective Range Not Required
NSAttributed option is supplied, then the longest effective range computation is not performed; the blocks may be invoked with consecutive attribute runs that have the same value.