Difference between revisions of "MetaClasses"

Revision as of 08:04, 13 January 2012

In object-oriented programming, a metaclass is a class whose instances are classes. Just as an ordinary class defines the behavior of certain objects, a metaclass defines the behavior of certain classes and their instances. Not all object-oriented programming languages support metaclasses. Among those that do, the extent to which metaclasses can override any given aspect of class behavior varies. Each language has its own metaobject protocol, a set of rules that govern how objects, classes, and metaclasses interact.

Often Namespaces are used as identifiers in Metaclasses, to distinguish different classes.

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	Each language has its own metaobject protocol, a set of rules that govern how objects, classes, and metaclasses interact.		Each language has its own metaobject protocol, a set of rules that govern how objects, classes, and metaclasses interact.

−	[[Namespaces]] are ~~often~~ used as identifiers in Metaclasses, to distinguish different classes.	+	Often [[Namespaces]] are used as identifiers in Metaclasses, to distinguish different classes.