Re: [Boost-users] Re: [Regex] Is it possible to assign an alias to a subexpression (to use later instead of its index)?

From: Stuart Dootson (stuart.dootson_at_[hidden])
Date: 2005-04-05 04:20:00

On Apr 5, 2005 10:00 AM, jordi <jordil2_at_[hidden]> wrote:
> John Maddock wrote:
> >> I would like to know if it's possible to assign an alias/name to a
> >> sub-expression.  When using short regex there is no problem nor
> >
> >
> > No that's not supported, but don't forget that you can always use
> > non-marking parenthesis to avoid throwing out too many fields.
> >
> > John.
> 
> I already use non-marking parenthesis but when using a long regex it's
> very difficult to decide which is the correct index to define the
> subexpression to use.  Furthermore, when using "conditional
> expressiones" in the format strings the difficulties are even more
> obvious...
> 
> Thanks anyway for your reply,
> 
> Jordi
> 

Jordi - something like Regex Coach (http://www.weitz.de/regex-coach/)
makes it a lot easier to work out what match indices to use for the
different captures in your regular expressions...

Stuart Dootson