Automatically assigned DDC number: 005117

Manually assigned DDC number: 005117

Number of references: 8

Title: Classes = Objects + Data Abstraction

Author:

Author:

Subject: Kathleen Fisher,John C. Mitchell Classes = Objects + Data Abstraction

Description: ion Kathleen Fisher and John C. Mitchell y Computer Science Department, Stanford University, Stanford, CA 94305 fkfisher,mitchellg@cs.stanford.edu January 11, 1996 Abstract We describe a type-theoretic foundation for object systems that include "interface types" and "implementation types," in the process accounting for access controls such as C++ private, protected and public levels of visibility. Our approach begins with a basic object calculus that provides a notion of object, method lookup, and object extension (an object-based form of inheritance). In this calculus, the type of an object gives an interface, as a set of methods (public member functions) and their types, but does not imply any implementation properties such as the presence or layout of any hidden internal data. We extend the core object calculus with a higher-order form of data abstraction mechanism that allows us to declare supertypes of an abstract type and a list of methods guaranteed not to be present. Th...

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1999-02-05

Pubyear: 1996

Format: ps

Identifier: http://citeseer.ist.psu.edu/161666.html

Source: ftp://theory.stanford.edu/pub/kfisher/fool-paper.ps

Language: en

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Rights: unrestricted

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