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4.1.2 Named Classes

A named KnowledgeWorks CLOS class is defined by the macro

def-named-kb-class

which is syntactically identical to the Common Lisp defclass macro, and semantically identical with the exception that it adds a KnowledgeWorks mixin class named-kb-object if none of the superclasses already contains it, and makes the default name for the objects be a symbol generated from the class name. Classes defined by def-named-kb-class contain a name slot which those defined by def-kb-class do not.

The function make-instance can be given the initialisation argument :name to specify a name. If not specified, a default name is generated. All names must be distinct as regarded by eq . The function

(get-kb-object <name>)

retrieves the instance from its name. The function

(kb-name <object>)

returns the name of the given object.

4.1.2.1 Examples


LispWorks KnowledgeWorks and Prolog User Guide - 14 Dec 2001

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