The type of a class (i.e., the class the
isa pointer points to) is another class, known as the metaclass, which is used to describe the metadata about instances of the class itself.
- 2. Objects, Messaging, and the Runtime
- from Effective Objective-C 2.0: 52 Specific Ways to Improve Your iOS and OS X Programs
- Publisher: Addison-Wesley Professional
- Released: May 2013
class methods was stored in its metaclass
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