[boost] Re: [regex] regex_replace with format string replaced asitis

From: Lorenzo Bettini (bettini_at_[hidden])
Date: 2005-06-02 18:08:59

John Maddock wrote:
>> by the way, I saw that it was also asked before (also by myself): do 
>> you plan to implement the features "subexpressions that matched" so 
>> that one does not have to iterate through all the subexpressions?
> 
> 
> Sorry, I'm being dense today: what do you mean by that?

instead of checking every what[i].matched as in the following

for (unsigned int i = 1; i < what.size(); ++i) {
        if (what[i].matched) {

I'd like to be able to have the subexpressions that matched accessible 
directly.  Something like

for (unsigned int i = 1; i < what.submatched.size(); ++i) {

so, if I have, say, 10 subexpressions, and only two matched, instead of 
checking every what[i] (for i = 0..9), I could access directly to those 
two subexpressions.  It'd be much more efficient.