class

1.   (programming)   The prototype for an object in an object-oriented language; analogous to a derived type in a procedural language. A class may also be considered to be a set of objects which share a common structure and behaviour. The structure of a class is determined by the class variables which represent the state of an object of that class and the behaviour is given by a set of methods associated with the class.

Classes are related in a class hierarchy. One class may be a specialisation (a "subclass") of another (one of its "superclasses") or it may be composed of other classes or it may use other classes in a client-server relationship. A class may be an abstract class or a concrete class.

See also signature.

2.   (programming)   See type class.

3.   (networking)   One of three types of Internet addresses distinguished by their most significant bits.

3.   (language)   A language developed by the Andrew Project. It was one of the first attempts to add object-oriented features to C.

Last updated: 1995-05-01


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