Why no RE match of A AND B?

Anders J. Munch andersjm at dancontrol.dk
Mon Mar 3 09:53:54 CET 2003


"Erik Max Francis" <max at alcyone.com> wrote:
> Rene Pijlman wrote:
> 
> > But OTOH there are notational shortcuts in the usual RE
> > languages. For example:
> > 
> >    a+ == aa*
> >    r{3,5} == rrrr?r?
> > 
> > So what makes the intersection different?
> 
> Probably frequency of use and utility.

Frequency of use for a feature not implemented is usually 0 ;-)

- Anders






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