C++/STL中 vector中对 “=”赋值运算符的支持

由于好奇STL中的vector 对于自定义数据类型的 “ = ”（赋值运算符的）支持，谢了一段简单的测试代码进行测试。

结果证明vector对于赋值预算符支持良好，但是对于动态分配的类构成的vector数组，

博主认为一定要重写析构函数与复制构造函数以及运算符重载“=”运算符（这是一条软件规则，详见博主测试），链接如下：

测试代码：

#include <iostream>
#include <vector>

using namespace std;


#pragma warning(disable:4996)

struct Point{
	int x;
	int y;
};


void  Print(vector<Point> &PointList){
	for (int i = 0; i < PointList.size(); i++){
		cout << PointList[i].x <<" "<< PointList[i].y << endl;
	}
	cout << endl << endl;
}

int main(){
	vector<Point> PointList1;
	vector<Point> PointList2;

	Point a;
	a.x = 1;
	a.y = 2;
	PointList1.push_back(a);


	a.x = 3;
	a.y = 2;
	PointList1.push_back(a);


	a.x = 4;
	a.y = 2;
	PointList1.push_back(a);

	Print(PointList1);

	cout << "test of  = operator (whole vector copy)" << endl;
	PointList2 = PointList1;
	Print(PointList2);

	cout << "test of = operator (part of the vector)" << endl;
	PointList2[1] = PointList1[2];
	PointList2[0] = PointList1[2];
	Print(PointList2);


	return 0;
}