Point 1: You should run with both "warnings" and "strict" enabled.
I know. Still it's not an error, and still you should also use Data::Dumper (or better) for debugging (and then you don't even get a warning). But didn't I say that already?
Point 2: I recommend taking some 'C' classes and you will understand the difference between "undef" and "zero".

How do C classes help me here? To understand that an undef doesn't create an IV?

I also know the difference between 0 and undef in perl. How does that relate to my second point? Both evaluate to false in boolean context, without warning.

In reply to Re^4: Looking for less code by moritz
in thread Looking for less code by Sun751

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