【c++】模拟实现boost库下的scoped_array

//模拟实现boost库下的scoped_array

#include <iostream>
#include <assert.h>
using namespace std;

template <class T>
class scoped_array
{
private:
	T * px;

	scoped_array(scoped_array const &);
	scoped_array& operator=(scoped_array const &);

	void operator==(scoped_array const &)const;
	void operator!=(scoped_array const &)const;
public:
	scoped_array(T * p = 0) :px(p)
	{}
	~scoped_array()
	{
		delete[] px;
	}

	void reset(T * p = 0)
	{
		assert(p == 0 || p != px);
		scoped_array<T>(p).swap(*this);
	}

	T& operator[](int i)const
	{
		assert(px != 0);
		assert(i >= 0);
		return px[i];
	}

	T* get()const
	{
		return px;
	}

	void swap(scoped_array & b)
	{
		T *tmp = px;
		px = b.px;
		b.px = tmp;
	}
};

int main()
{
	int *arr = new int[100];
	arr[0] = 50;
	scoped_array<int> ptr(arr);
	cout << ptr[0] << endl;
	return 0;
}

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