Sorry, I mistyped an example (now corrected) that made it look like I wanted the behavior of a variable. That would indeed suggest an overload solution. I want it to be a function, with arguments in the actual case.

ikegami has pointed out the Want module. That should show me the way.

Anno

In reply to Re^2: Autovivifying XS routine by Anno
in thread Autovivifying XS routine by Anno

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