Ah ha! I knew it was something simple I was missing. Thanks that gives me enough to take a stab at it again.

reduce is included on the import list for List::Util in the main program I just forgot it in my sample. Adding it still gives the warning about $a and $b only being used once. I've updated the sample and my post.

Owl looked at him, and wondered whether to push him off the tree; but, feeling that he could always do it afterwards, he tried once more to find out what they were talking about.

In reply to Re^2: Can't call method "abs" on an undefined value. by HollyKing
in thread Can't call method "abs" on an undefined value. by HollyKing

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