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Date: Tue, 10 Dec 1996 03:26:39 GMTServer: NCSA/1.4.2Content-type: text/html<html><head><TITLE>Constraints and Object Identity</title></head><body><H2>Constraints and Object Identity</H2><p>Authors: Gus Lopez, Bjorn Freeman-Benson, and Alan Borning<p>Published in <em>Proceedings of the 1994 European Conference onObject-Oriented Programming</em>, Bologna, Italy, July 1994, pages 260-279.<P><hr><H3>Abstract</H3>Constraint imperative programming is an integration of declarative constraintsand imperative object-oriented programming.  The primary goal of thisintegration is to use constraints to express relations among objectsexplicitly -- relations that were implicit in the code in previous languages.However, one of the fundamental concepts of object-oriented programming,object identity, can result in implicit relations, even when explicit identityconstraints are supported.  We analyze the problem and propose a solution --identity constraints -- which we have implemented in our Kaleidoscope'93language.  This solution is understandable, efficiently implementable, andcompatible with the Kaleidoscope constraint model.<P><HR><P>Click <!WA0><a href="ftp://cs.washington.edu/tr/1994/03/UW-CSE-94-03-07.PS.Z">here</a> to get the postscript file.<P>Return to <!WA1><a href="http://www.cs.washington.edu/research/projects/weird/www/index.html">Constraints home page</a>

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