#ifndef COMMENT_H
#define COMMENT_H

#include <iostream>
#include <string>

class Comment {
public:
  Comment& operator << (const void * ) const { };
  Comment& operator << (const double ) const { };
  Comment& operator << (ostream&(&) (ostream&)) { };
  Comment& operator << (string &) {};
};

extern Comment dout;

#endif