Common Lisp the Language, 2nd Edition
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The Object System supplies a standard set of meta-objects, called standard
meta-objects. These include the class standard-object and
instances of the classes standard-method,
standard-generic-function, and method-combination.
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The class standard-method is the default class of
methods that are defined by the forms defmethod,
defgeneric, generic-function, generic-flet,
generic-labels, and with-added-methods.
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The class standard-generic-function is the default class of
generic functions defined by the forms defmethod,
defgeneric, generic-function, generic-flet,
generic-labels, with-added-methods, and defclass.
- The class named standard-object is an instance of
the class standard-class and is a superclass of every class that
is an instance of standard-class except itself.
- Every method combination object is an instance of a
subclass of the class method-combination.
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