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git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1486 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
26 lines
1.1 KiB
Plaintext
26 lines
1.1 KiB
Plaintext
=================================================================
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Logtalk - Object oriented extension to Prolog
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Release 2.26.2
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Copyright (c) 1998-2005 Paulo Moura. All Rights Reserved.
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=================================================================
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To load this example and for sample queries, please see the SCRIPT file.
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Example adopted from the chapter "Classifying Prototype-Based Programming
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Languages" by Christophe Dony, Jacques Malenfant, and Daniel Bardou, found
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on the book "Prototype-Based Programming - Concepts, Languages, and
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Applications" published by Springer.
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This prototype programming example illustrates how we can do both property
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sharing and value sharing in Logtalk by calling the built-in predicate
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modification methods asserta/1, assertz/1, and retract/1 either in the
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context of "this" or in the context of "self".
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In this example we have a prototype, joePerson, containing general data on
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Joe such as its age, name, or address, and four descendant prototypes or
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viewpoints, joeSportsman, joeEmployee, joeChessPlayer, and joeFilmEnthusiast.
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Each descendant contains data related to a particular viewpoint about Joe.
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