Do you have a reference for this, or is it a guess?

I thought I had a reference for this ... but no, I completely misread this statement in the docs, relating to isdual(): 
If $var is a scalar that has both numeric and string values, the resul
+t is true

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Not only does it not pertain to dualvar(), but it doesn't say what I thought it said, anyway !!
Additional experimentation suggests that, in fact, the dualvar will be True if the second arg is True. Is that the correct summation ?
Thanks for catching.

Not sure if that mistake necessarily impacts upon the little overload demo I provided.
In any case, of course, that overload_true() subroutine can be tweaked to make it do whatever you want.

I'll edit that post of mine.

Cheers,
Rob

In reply to Re^3: "" but true by syphilis
in thread "" but true by Chuma

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