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yap-6.3/Logtalk/examples/roots/SCRIPT
pmoura 20dcf89f9a Logtalk 2.21.5 files.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1171 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
2004-11-03 00:13:01 +00:00

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=================================================================
Logtalk - Object oriented extension to Prolog
Release 2.21.5
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
=================================================================
% start by loading the example:
| ?- logtalk_load(loader).
...
% some queries dealing with instance/class hierarchies:
| ?- object::ancestors(Ancestors).
Ancestors = [class, abstract_class, object]
Yes
| ?- class::instances(Instances).
Instances = [object, abstract_class, class]
Yes
| ?- class::superclass(Super).
Super = abstract_class ;
Super = object ;
No