TY again for the clarification. I understand what you mean. OTOH your own article at Re: Modification of @ISA at run time stresses the advantages of the delegator model over the class factory one when one has to deal with many methods needing different "versions" each depending on some conditions. So the question is: what if one has both requirements? I.e. the latter one on a set of "common" methods (exposing a uniform interface) and the need for type-specific features as well?

In reply to Re^6: Modification of @ISA at run time by blazar
in thread Modification of @ISA at run time by jkeenan1

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