Prototype of the iod option parser

iod_option_parser.cc

#include "iod/parse_options.hh"
#include "symbols.hh"

using namespace s;

int main(int argc, char* argv[])
{
   auto options = iod::parse_options(argc, argv,
      _size | _s = int(20),
      _elts | _e = std::vector<int>(),
      _opt  | _o = optional(int(3)) 
   ); 
   std::cout << options.size << " " << options.opt << " " << options.elts.size() << std::endl;

   // Fill global variables
   auto options = iod::parse_options(argc, argv,
      _size | _s = &a_int_var,
      _elts | _e = &a_vector,
      _opt  | _o = &another_var 
   ); 

   // Positional arguments 
   auto options = iod::parse_options(argc, argv,
      _size | _s = int(20),
      _elts | _e = std::vector<int>(),
      _opt  | _o = optional(int(3)),
      [ _size, _opt ]
   ); 
  
   return 0;
}