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Alex Rivera
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When using associated objects, an Objective-C runtime feature available starting from iOS 4 and OSX 10.6, it's necessary to define a key for storing and retrieving the object at runtime. The typical usage is defining the key like follows static char const * const ObjectTagKey = "ObjectTag"; and then use is to store the object objc_setAssociatedObject(self, ObjectTagKey, newObjectTag, OBJC_ASSOCIATION_RETAIN_NONATOMIC); and retrieve it objc_getAssociatedObject(self, ObjectTagKey); (example taken by http://oleb.net/blog/2011/05/faking-ivars-in-objc-categories-with-associative-references/ ) Is there a cleaner way to define the associated object key, that doesn't involve the declaration of extra variables?
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