#include <QtCore/qset.h>
#ifndef QSET_H
template < typename T > class QSet{
   /* Some contents are skipped to improve readability */
   public: class iterator{
      /* ... */
      private: typedef class QHash < T, struct QHashDummyValue > Hash;
      /* ... */
   };
   /* ... */
};
#endif // QSET_H