On Fri, Jul 18, 2008 at 1:19 PM, Gisle Aas <gisle@[...].com>  wrote:

> > it's really useful and the common (if $i % 5 == 0) format has lots of
> > shortcomings;
> 
>  What would those shortcoming be?  I've never been bothered by that idiom.

me neither.  The following may or may not work today, but demonstrates
what Macrame's EXPAND is all about.

   use Macrame;
   macro every(N) {
         EXPAND {
                $Macrame::Expand::EveryInstanceCounter++;
                my $count;

*{"Macrame::Expand::EveryInstance".$Macrame::Expand::EveryInstanceCounter}
= sub {
                     ! ( ++$count % N )
                };


"(&Macrame::Expand::EveryInstance".$Macrame::Expand::EveryInstanceCounter.")"
         }
   }
   macro every N { every (N) }