note LanX eq is supposed to "ignore types" it's just comparing the stringified arguments<P> [http://perldoc.perl.org/perlop.html#Equality-Operators|eq]: <i>Binary "eq" returns true if the left argument is stringwise equal to the right argument. </i><P> so two arguments mapped to the same string are "equal".<P> I think you want something like [https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Operators/Comparison_Operators|<c>===</c> in JS]¹, IMHO you have to construct this on your own.<P> <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-708738"> <p>Cheers Rolf </div></div><P> UPDATE: repaired broken link to <c>[doc://eq]</c><P> (¹) an approach with operator overloading can be found here: <br> [id://781502] 781447 781447