Re: [Boost-users] regex_iterator with for_each question...

From: shunsuke (pstade.mb_at_[hidden])
Date: 2007-04-16 11:09:55

Graham Reitz wrote:

>  int main()
> {
>     boost::regex("(\\d+),?");
>     string s = "1,1,2,3,5,8,13,21";
> 
>     boost::sregex_iterator it(s.begin(), s.end(), reg);
>     // Is end initialized to anything here?
>     boost::sregex_iterator end;
> 
>     regex_callback c;
> 
>     // How is end valid here?
>     int sum = for_each(it, end, c).sum();
> 
>     return 0;
> }

Your code seems to work fine.
('reg' isn't defined, though :-)
You want to know how to work?
'it' automagically turns into the value that equals to 'end' when 'it' 
reaches to 's.end()'.
Thus everything works fine.
You can look into <boost/regex/v4/regex_iterator.hpp> in detail.

Regards,

-- 
Shunsuke Sogame