What is the difference between NS_ENUM and NS_OPTIONS?

Question

I preprocessed following code with clang in Xcode5.

typedef NS_ENUM(NSInteger, MyStyle) {
    MyStyleDefault,
    MyStyleCustom
};

typedef NS_OPTIONS(NSInteger,         


        

Answer 1

The only major difference is that using the appropriate macro allows Code Sense (Xcode's code completion) to do type checking and code completion better. For example, NS_OPTIONS allows the compiler to make sure all the enums you | together are of the same type.

For further reading see: http://nshipster.com/ns_enum-ns_options/

Edit:

Now that Swift is coming, using NS_ENUM/OPTIONS is highly recommended so that the enum can be correctly bridged to a swift enum.