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Logtalk - Object oriented extension to Prolog
Release 2.25.1
Copyright (c) 1998-2005 Paulo Moura. All Rights Reserved.
% start by loading the example:
| ?- logtalk_load(diamonds(loader)).
...
% first variant of the "diamond problem", defined in the "diamond1" source file:
| ?- d1::m.
Redefinition of method m/0 in object b1
yes
% second variant of the "diamond problem", defined in the "diamond2" source file:
| ?- d2::m.
Redefinition of method m/0 in object c2
% third variant of the "diamond problem", defined in the "diamond3" source file:
| ?- d3::b3_m.
Redefinition of method m/0 in object b3
| ?- d3::c3_m.
Redefinition of method m/0 in object c3
| ?- d3::m.
