C++类模板案例-数组类封装

#include<iostream>
using namespace std;

template<class T>
class MyArray
{
public:
	MyArray(int capacity)
	{
		this->m_Capacity = capacity;
		this->m_Size = 0;
		this->pAddress = new T[this->m_Capacity];
	}

	~MyArray()
	{
		if (this->pAddress != NULL)
		{
			delete[] this->pAddress;
			this->pAddress = NULL;
			this->m_Capacity = 0;
			this->m_Size = 0;
		}
	}

	//拷贝函数（深拷贝）
	MyArray(const MyArray& arr)
	{
		this->pAddress = new T[arr.m_Capacity];
		this->m_Capacity = arr.m_Capacity;
		this->m_Size = arr.m_Size;

		for (int i = 0; i < arr.m_Size; i++)
		{
			this->pAddress[i] = arr[i];
		}
	}

	//等号重载
	MyArray& operator=(const MyArray &arr)
	{
		if (this->pAddress != NULL)
		{
			delete[] this->pAddress;
			this->pAddress = NULL;
			this->m_Capacity = 0;
			this->m_Size = 0;
		}

		this->pAddress = new T[arr.m_Capacity];
		this->m_Capacity = arr.m_Capacity;
		this->m_Size = arr.m_Size;

		for (int i = 0; i < arr.m_Size; i++)
		{
			this->pAddress[i] = arr[i];
		}

		return *this;
	}

	//重载[]获取任意值
	T& operator[](const int index)
	{
		return this->pAddress[index];
	}

	//尾插法加入值
	void Push_back(const T& val)
	{
		if (this->m_Size == this->m_Capacity)
		{
			return;
		}
		this->m_Size++;
		this->pAddress[this->m_Size] = val;
	}

	//尾删法删除值
	void Pop_back()
	{
		if (this->m_Size == 0)
		{
			return;
		}
		this->m_Size--;
	}

	int getCapacity()
	{
		return this->m_Capacity;
	}

	int getSize()
	{
		return this->m_Size;
	}

private:
	int m_Capacity;
	int m_Size;
	T* pAddress;
};