note jmcnamara <br> This was a great idea for a game of Golf. Recent outings have been too much like mini CS projects. Sorry [Masem]. ;-) <br> <br> This uses your methodology. There are 69 chars in the body of the program. It passes <tt>-w</tt> and <tt>strict</tt>. It also handle negative numbers: <code> perl -le'/^\D$/?($_.=pop@_)&&push@_,eval pop(@_).$_:push@_,$_ for@ARGV;print@_'</code> <br> I recently spent two months of my spare time implementing a type of RPN parser using Parse::RecDescent. Obviously I was taking the wrong approach. :-) <br> <br> John. <br> -- <br> <br> 79436 79436