Introduction to SWI-Prolog & Its Graphical Tracer Programming ...
Introduction to SWI-Prolog & Its Graphical Tracer Programming ...
Introduction to SWI-Prolog & Its Graphical Tracer Programming ...
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Let's Use the abs(X,Y) Rules<br />
abs(X,Y) :- X >= 0, Y is X<br />
abs(X,Y) :- X < 0, Y is X * -1<br />
And compile...