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Using the Objective-C runtime library, how do we find out if an object is a class object rather than an instance of a class?
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A class is a blueprint which you use to create objects. An object is an instance of a class - it's a concrete 'thing' that you made using a specific class. So, 'object' and 'instance' are the same thing, but the word 'instance' indicates the relationship of an object to its class.
an object is an element (or instance) of a class; objects have the behaviors of their class. The object is the actual component of programs, while the class specifies how instances are created and how they behave. method: a method is an action which an object is able to perform.
isinstance() checks whether or not the object is an instance or subclass of the classinfo.
An instance is a specific representation of an object. An object is a generic thing while an instance is a single object that has been created in memory. Usually an instance will have values assigned to it's properties that differentiates it from other instances of the type of object.
Easiest surefire way I know is class_isMetaClass(object_getClass(yourObject)). (This works because classes are always instances of metaclasses.)
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