Re: [FWP] Fun With Golf

[Ronald J Kimball <rjk@linguist.dartmouth.edu>]

On Thu, Oct 19, 2000 at 12:16:59AM +0300, Ilmari Karonen wrote:
> 
> 
> On Wed, 18 Oct 2000 yanick1@sympatico.ca wrote:
> > perlgolf hole - Digital Root
> > Write a subroutine to compute the digital root of any whole number argument.
> > 
> > 	sub hole {pop=~/./;$'?hole($&+$'):$&}
> 
> So what's wrong with the arithmetic approach?
> 
>   sub hole {$_&&(abs($_)-1)%9+1}
> 
> If the numbers were known to be positive, ($_-1)%9+1 would suffice.

Same comments as my previous message.  Nice work, and that was a mistake in
the description.  :)


Ronald

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