play with boost range and overloading string operator

lolrange.cpp

#include <iostream>
#include <string>
#include <boost/range/counting_range.hpp>

typedef boost::iterator_range<boost::counting_iterator<int> > counting_range_int_t;

counting_range_int_t operator "" _ri(char const* wtf, std::size_t len)
{
  static std::istringstream parse;
  parse.clear();
  parse.str(std::string(wtf, wtf+ len));
  int begin, end;
  parse>> begin;
  parse.ignore(1);
  parse>> end;

  auto range= boost::counting_range(begin, end);
  return range;
}

std::ostream &operator<< (std::ostream &out, counting_range_int_t const &r)
{
  out<< '[';
  std::for_each(r.begin(), r.end(), [](int i){ std::cout<< i<< ", "; });
  return out<< "\b\b]\n";
}

int main()
{
  std::cout<< "1-10"_ri;
}