DataStruct()
		: m_data(new InternalData())
		, m_index(++s_index)
	{
		std::cout << "Owner Constructor: " << this << ", " << s_index << "\n";
	}

	~DataStruct()
	{
		std::cout << "Owner Destructor: " << this << ", " << s_index << "\n";
	}

	DataStruct(DataStruct& other) //copy
	{
		std::cout << "Owner Copy Constructor: " << this << ", " << s_index << "\n";
		swap(*this, other);
	}

	friend void swap(DataStruct& first, DataStruct& second)
	{
		std::cout << "Owner Swapping: " << &first << " and " << &second << "\n";
		using std::swap;
		swap(first.m_data, second.m_data);
	}

	DataStruct& operator=(DataStruct copy) //assignment
	{
		std::cout << "Owner Assingment operator: " << this << ", " << s_index << "\n";
		swap(*this, copy);
		return *this;
	}