note
Anonymous Monk
Oddly enough, the <code>$wheel < 0</code> may be unnecessary even if it does aid in clarification.
<p> Only in the case of the odometer 'turning over' will <code>$wheel</code> go negative. When <code>$wheel</code> is <code>-1</code>, <code>$odometer[ $wheel ]</code> will be the same as <code>$odometer[ $#odometer ]</code>, which will have already been set to 0.
<p> ... of course relying on this in your code <em>will</em> piss off your maintainers.
<p>TJD
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