Summary:
as title
in practice, this doesn't make any difference, but this is to follow the apple recommendation and for us to have a more consistent codebase.
https://developer.apple.com/library/content/releasenotes/ObjectiveC/ModernizationObjC/AdoptingModernObjective-C/AdoptingModernObjective-C.html
>The NS_ENUM macro helps define both the name and type of the enumeration, in this case named UITableViewCellStyle of type NSInteger. The type for enumerations should be NSInteger.
>Like enumerations, the NS_OPTIONS macro defines both a name and a type. However, the type for options should usually be NSUInteger.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D32641990
fbshipit-source-id: 56e4cd44cdefe54f61c90844665a685ee2d6ffad