On Tue, 3 Sep 2002, Luke Palmer wrote: > On Tue, 3 Sep 2002, Brent Dax wrote: > > > Damian Conway: > > # Neither. You need: > > # > > # $roundor7 = rx /<<roundascii>+[17]>/ > > # > > # That is: the union of the two character classes. > > > > How can you be sure that <roundascii> is implemented as a character > > class, as opposed to (say) an alternation? > > What's the difference? :) > > Neglecting internals, semantically what I<is> the difference?
None, I think. Of course, if we ignore internals, there's no difference bewteen that and "rx /<roundascii> | 1 | 7/". /s
