Re: [FWP] japhy had a silly idea...

["Abigail" <abigail@foad.org>]

On Fri, May 25, 2001 at 10:57:46PM -0400, Mark Rogaski wrote:
> An entity claiming to be Abigail (abigail@foad.org) wrote:
> : 
> : BTW, an interesting exercise would be to prove that a certain regex
> : only matches a certain set of strings, and no other strings.
> : 
> 
> If you mean that the sets are finite, then the regex cannot include *, +,
> or any other unbounded repetition.


No, I don't mean finite. The absense of repetitors might make it 
easier to prove a regex matches a set, and nothing but the set,
but I don't think the set being finite makes it any easier.



Abigail

==== Want to unsubscribe from Fun With Perl?  Well, if you insist...
==== Send email to <fwp-request@technofile.org> with message _body_
====   unsubscribe