nullptr_emulation.h

/*-----------------------------------------------------------------------
From Scott Meyers C++ book
-----------------------------------------------------------------------*/

#pragma once

#if __cplusplus < 201103L

const // It is a const object...
class nullptr_t
{
  public:
    template<class T>
    inline operator T*() const // convertible to any type of null non-member pointer...
    { return 0; }

    template<class C, class T>
    inline operator T C::*() const   // or any type of null member pointer...
    { return 0; }

  private:
    void operator&() const;  // Can't take address of nullptr

} nullptr = {};

#endif