Global Variable


Predefined CFDictionaryValueCallBacks structure containing a set of callbacks appropriate for use when the values in a CFDictionary are all CFType-derived objects.


let kCFTypeDictionaryValueCallBacks: CFDictionaryValueCallBacks


The retain callback is CFRetain, the release callback is CFRelease, the copy callback is CFCopyDescription, and the equal callback is CFEqual. Therefore, if you use a pointer to this constant when creating the dictionary, values are automatically retained when added to the collection, and released when removed from the collection.