MyArray

// Marray框架.cpp: 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include<iostream>
using namespace std;

template<class T>
class MyArray {
public:
	MyArray(int capacity)
	{
		this->mCapacity = capacity;
		this->mSize = 0;
		this->pAddr = new T[this->mCapacity];
	}
	MyArray(const MyArray<T>& arr)
	{
		this->mSize = arr.mSize;
		this->mCapacity = arr.mCapacity;
		this->pAddr = new T[this->mCapacity];
		for (int i = 0; i < this->mSize; i++)
		{
			this->pAddr[i] = arr.pAddr[i];
		}

	}
	T &operator[](int index)
	{
		return this->pAddr[index];
	}
	MyArray<T> operator=(const MyArray<T> & arr)
	{
		if (this->pAddr != NULL)
			delete[] this->pAddr;
		this->mSize = arr.mSize;
		this->mCapacity = arr.mCapacity;
		this->pAddr = new T[this->mCapacity];
		for (int i = 0; i < this->mSize; i++)
		{
			this->pAddr[i] = arr.pAddr[i];
		}
		return *this;
	}
	void PushBack(T &data)
	{
		if (this->mSize >= this->mCapacity)
			return;
		//调用拷贝构造 或者等号操作符
		//1 对象元素必须能够被拷贝
		//2.容器都是值寓意，不是引用寓意，向容器中放入的都是元素的拷贝，不是元素本身
		//3如果元素成员有指针，注意深拷贝，浅拷贝
		this->pAddr[this->mSize] = data;
		this->mSize++;
	}
	void PushBack(T &&data)//对右值取引用	
	{

		if (this->mSize >= this->mCapacity)
			return;
		this->pAddr[this->mSize] = data;
		this->mSize++;
	}
	~MyArray()
	{
		if (this->pAddr != NULL)
			delete []this->pAddr;
	}
public:
	int mCapacity;
	int mSize;
	T *pAddr;
};
class Person {

};
void test02()
{
	Person p1, p2;
	MyArray<Person> arr(10);
	arr.PushBack(p1);
	arr.PushBack(p2);
}
void test01()
{
	MyArray<int> arr1(10);
	int a = 1, b = 2;
	arr1.PushBack(a);
	arr1.PushBack(b);
	arr1.PushBack(3);
	arr1.PushBack(4);
	for (int i = 0; i < arr1.mSize; i++)
	{
		cout << arr1[i] << "  ";

	}
	cout << endl;
}
int main()
{
	test01();
    return 0;
}