Enums
The following enums are available globally.
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An option on how to do comparisons between similar objects.
See moreDeclaration
Objective-C
enum IGListDiffOption : NSUInteger {}
Swift
enum IGListDiffOption : UInt
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Bitmask-able options used for prerelease feature testing.
See moreDeclaration
Objective-C
enum IGListExperiment : NSUInteger {}
Swift
struct IGListExperiment : OptionSet