"smart" pointers by baldurk

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class MMObject {   public:     MMObject() { objects.push_back(this); }     void AddRef() { ++refcount; }     void Release() { --refcount; }     static bool CollectGarbage()     {     vector<MMObject *>::iterator new_end =     remove_if(objects.begin(), objects.end(), dead);     objects.erase(new_end, objects.end());     }     static bool num() { return objects.size(); }   private:     static bool dead(MMObject *o)     {     if(o->refcount == 0)         return true;     return false;     }     static vector<MMObject *> objects;     int refcount; }; template <class T> class Pointer {   public:     Pointer() { obj = NULL; }     Pointer(T *o) { obj = NULL; *this = o; }     Pointer(Pointer<T> o) { obj = NULL; *this = o; }     Pointer(Pointer<T> &o) { obj = NULL; *this = o; }     ~Pointer() { if(obj) obj->Release(); }     operator T*() const { return obj; }     bool operator !() const { return !obj; }     bool operator ==(Pointer<T> o) const { return obj == o.obj; }     bool operator ==(T *o) const { return obj == o; }     T &operator *() const { assert(obj!=NULL);return *obj; }     T *operator ->() const { assert(obj!=NULL);return obj; }     void operator =(T *o)     {     if(obj) obj->Release();     obj = o;     if(obj) obj->AddRef();     }     void operator =(Pointer<T> o)     {     if(obj) obj->Release();     obj = o.obj;     if(obj) obj->AddRef();     }   private:     T *obj; }; ///////////////////////////////////////////////////////////// struct Int : public MMObject {   public:     int i;     operator int() { return i; } }; Pointer<Int> PI = new Int();