Virtual classes: a powerful mechanism in object-oriented programming Export

@inproceedings{citeulike:5920768, abstract = {The notions of class, subclass and virtual procedure are fairly well understood and recognized as some of the key concepts in object-oriented programming. The possibility of modifying a virtual procedure in a subclass is a powerful technique for specializing the general properties of the superclass. In most object-oriented languages, the attributes of an object may be references to objects and (virtual) procedures. In Simula and BETA it is also possible to have class attributes. The power of class attributes has not yet been widely recognized. In BETA a class may also have virtual class attributes . This makes it possible to defer part of the specification of a class attribute to a subclass. In this sense virtual classes are analogous to virtual procedures. Virtual classes are mainly interesting within strongly typed languages where they provide a mechanism for defining general parameterized classes such as set, vector and list. In this sense they provide an alternative to generics. Although the notion of virtual class originates from BETA, it is presented as a general language mechanism.}, address = {New York, NY, USA}, author = {Madsen, O. L. and Pedersen, B. Moller}, booktitle = {OOPSLA '89: Conference proceedings on Object-oriented programming systems, languages and applications}, citeulike-article-id = {5920768}, citeulike-linkout-0 = {http://portal.acm.org/citation.cfm?id=74919}, citeulike-linkout-1 = {http://dx.doi.org/10.1145/74877.74919}, doi = {10.1145/74877.74919}, isbn = {0-89791-333-7}, keywords = {beta, classes, object\_oriented\_programming, plt, virtual\_classes}, location = {New Orleans, Louisiana, United States}, pages = {397--406}, posted-at = {2009-10-16 16:26:08}, priority = {2}, publisher = {ACM}, title = {Virtual classes: a powerful mechanism in object-oriented programming}, url = {http://dx.doi.org/10.1145/74877.74919}, year = {1989} }

TY - CONF ID - citeulike:5920768 L3 - citeulike-article-id:5920768 N2 - The notions of class, subclass and virtual procedure are fairly well understood and recognized as some of the key concepts in object-oriented programming. The possibility of modifying a virtual procedure in a subclass is a powerful technique for specializing the general properties of the superclass. In most object-oriented languages, the attributes of an object may be references to objects and (virtual) procedures. In Simula and BETA it is also possible to have class attributes. The power of class attributes has not yet been widely recognized. In BETA a class may also have virtual class attributes . This makes it possible to defer part of the specification of a class attribute to a subclass. In this sense virtual classes are analogous to virtual procedures. Virtual classes are mainly interesting within strongly typed languages where they provide a mechanism for defining general parameterized classes such as set, vector and list. In this sense they provide an alternative to generics. Although the notion of virtual class originates from BETA, it is presented as a general language mechanism. CY - New Orleans, Louisiana, United States SN - 0-89791-333-7 AD - New York, NY, USA EP - 406 TI - Virtual classes: a powerful mechanism in object-oriented programming PB - ACM T2 - OOPSLA '89: Conference proceedings on Object-oriented programming systems, languages and applications SP - 397 KW - beta KW - classes KW - object_oriented_programming KW - plt KW - virtual_classes AU - Madsen, OL AU - Pedersen, Moller PY - 1989/// UR - http://dx.doi.org/10.1145/74877.74919 ER -