On Sat, Jun 15, 2002 at 09:08:31AM -0500, Jonathan Scott Duff wrote:
> At the very least you should be able to do this:
>
> rule leftop($leftop,$op;$rightop) {
> $other := { (defined $rightop) ?? $rightop :: $leftop }
> <$leftop> [$op <$other>]*
> }
Or maybe
rule leftop($leftop,$op;$rightop) {
<$leftop> [$op <{ $rightop // $leftop }>]*
}
Marcel
--
We are Perl. Your table will be assimilated. Your waiter will adapt to
service us. Surrender your beer. Resistance is futile.
-- London.pm strategy aka "embrace and extend" aka "mark and sweep"
