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Logtalk - Object oriented extension to Prolog
Release 2.12.0
Copyright (c) 1998-2002 Paulo Moura. All Rights Reserved.
% get the value of the class variable for each instance:
| ?- instance1::cv(Value1), instance2::cv(Value2), instance3::cv(Value3).
Value1 = 0
Value2 = 0
Value3 = 0
yes
% change the value of the class variable via instance1:
| ?- instance1::set_cv(1).
% get the value of the class variable for the other instances:
| ?- instance2::cv(Value2), instance3::cv(Value3).
Value2 = 1
Value3 = 1
