Eigenclass model: Difference between revisions

Revision as of 18:26, 22 January 2013

Revision as of 18:29, 22 January 2013

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[[Perl (programming language)|Perl]].

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Generally, the model relates to the core part of data models in which classes appear as objects.

The group can be further divided into two subgroups: languages allowing an actual reference to an eigenclass (Ruby, Smalltalk, Objective-C and, in a lesser sense, Scala) and languages in which eigenclasses are a purely fictitious concept.

As a consequence, the model relates to [[Ontology language|ontology languages]] such as [[RDF Schema]] or [[Web Ontology Language|OWL]].

A good indicator of applicability is the presence of the notion of [[metaclass]].

One can distinguish two degrees of applicability.

TheHigh groupdegree canis beassigned furtherto dividedlanguages intothat two subgroups: languages allowingallow an actual reference to an eigenclass: (Ruby, Smalltalk, Objective-C and, in a lesser sense, Scala) and languages in which eigenclasses are a purely fictitious concept.

Low degree is assigned to languages in which eigenclasses are a purely fictitious concept. In this latter case the eigenclass model can be regarded as an abstract device for joining inheritance with the instance-of relation.

== History ==