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Let's Agree on the Meaning of 'Class'

By  and Anthony J H Simons and Anthony J H Simons


It is a curious thing that after 30 years of object-oriented programming, we still have no consensus on the meaning of class. The OMG 1991 standard avoided using the term class altogether; and current design notations such as UML and OML still contain certain misconceptions regarding class: the debate on type versus implementation is old and focusses on the wrong argument- a class is not strictly either one of these things. This article unpacks 10 years of theoretical work on extensible interfaces and implementations to explain exactly how a class is different from a concrete type. This work impacts widely on current standards, definitions and notations. Conference Stream Research paper (presents old results in new light)

Topics: Let's Agree on the Meaning of Class, page 1
Year: 2008
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