On Fri, 7 Jun 2002, Damian Conway wrote:
> Brent Dax wrote:
>
> > grammar Perl6::Regex {
> > rule metachar { <[<{(\[\])}>:*+?\\|]> }
> >
> > rule ws { [<[\h\v]>|\#\N*]* }
>
> Or just:
>
> rule ws { [\s|\#\N*]* }
Just as a practical matter, given that you tend to have runs of
whitespace,
rule ws { [ \s+ | \#\N* ]* }
will probably run faster. At least, that would certainly run
faster with Perl 5's engine. Can't speak for Perl 6's, of course.
As a different kind of practical matter, if we put spaces around
our square brackets and vertical bars, it won't look so much like
a character class. I know we're all from the old school, but we
should therefore be even more alert against excessive regex
compaction.
Larry
