Code Smite

template<typename T>
class MemberPointerContainer
{
  typedef int T::* MEMPTR;
public:
  MemberPointerContainer(MEMPTR element)
  {
    _element = element;
  }
   
  template<typename R>
  static MemberPointerContainer CreateMemberPointer(R T::* element)
  {
    return MemberPointerContainer(reinterpret_cast<MEMPTR>(element));
  }
 
  template<typename R>
  void Set(T& t, R value)
  {
    typedef R T::* MEMPTR_SPECIALIZED;
    t.*(reinterpret_cast<MEMPTR_SPECIALIZED>(_element)) = value;
  }
  MEMPTR _element;
};

class NetworkEntity
{
public:
  int field1;
  int field2;
  double field3;
};
#include<vector>
void main()
{
  std::vector< MemberPointerContainer<NetworkEntity> > vect;  
  vect.push_back(MemberPointerContainer<NetworkEntity>::CreateMemberPointer(&NetworkEntity::field1));
  vect.push_back(MemberPointerContainer<NetworkEntity>::CreateMemberPointer(&NetworkEntity::field2));  
  vect.push_back(MemberPointerContainer<NetworkEntity>::CreateMemberPointer(&NetworkEntity::field3));
  NetworkEntity net;
  vect[0].Set(net, 5);
}