Re: some combination of std::distance/std::max_element ( ? )

Carl, given.

# include <iostream>
# include <string>
# include <vector>

using namespace std;

template <class For1, class For2, class Out>
Out max_of_zones(For1 data_begin,For1 data_end,
                  For2 z_begin,For2 z_end, Out out)
{
// beginning and end of current range
   For1 begin = data_begin;
   For2 end ( begin) ;

   for( ; z_begin !=z_end; begin = end, ++out, ++z_begin )
   {
     std::advance(end,*z_begin);
     *out = *std::max_element(begin,end);
   }
   return out;
}

int main()
{
   std::vector<int> sizes(3,3);
   std::vector<double> data;
        // place the six values in data.
   std::vector<double> max_of_zone;
   max_of_zones(data.begin(),data.end(),sizes.begin(),sizes.end(),
                 std::ostream_iterator<double>(std::cout,","));
}

There's an issue with this line. 'For2 end ( begin) ;'. For1 and
For2 are different types. I'm trying to figure out the workaround to
get this to compile but I'm going around in circles. template/iterator
knowledge is foundational :)