#include "array_wrap.hpp"
#include <boost/range.hpp>
#include <iostream>

template<typename in_t>
typename boost::range_value<in_t>::type sum (in_t const& in) {
  typename boost::range_const_iterator<in_t>::type i = boost::begin (in);
  typename boost::range_const_iterator<in_t>::type e = boost::end (in);
  typename boost::range_value<in_t>::type o = 0;
  for (; i != e; ++i) 
    o += *i;

  return o;
}

int main () {
  double x[10];
  for (int i = 0; i < 10; ++i)
    x[i] = i;

  double y = sum (array_wrap<double> (x, 10));
  std::cout << y << '\n';
}