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

From: jordi (jordil2_at_[hidden])
Date: 2005-04-01 02:24:47

Hi,

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 
confusion but when using a long regex then I get lost looking at the 
correct index to use.  It would be much easier if I can assign an alias.

So, instead  to use a regex like this:

"\s*(\d+)\s+(\d+)\s+(\d+)\s+"

I would like to be able to use something like:

"\s*([$VALUE1]\d+)\s+([$VALUE2]\d+)\s+([$VALUE3]\d+)\s+"

I don't know if this feature exists in regex but I haven't found it but 
maybe I dind't know where to find...

Thanks in advance,

Jordi