Rather than $_[0]->isa I'd write UNIVERSAL::isa($_[0],__PACKAGE__) because if your first argument is "" or "\t", just to give two examples, then your code dies.

        - tye (but my friends call me "Tye")

In reply to (tye)Re: OO Slip-up Preventor by tye
in thread OO Slip-up Preventor by japhy

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