C++案例 自定义数组

#include <string>
#include <iostream>
#include <algorithm>
#include <initializer_list>
using namespace std;template<class T>
class myArray
{// 类模板 友元 重载 外部类实现// cout << array << endl;friend ostream& operator<< <T>(ostream& cout, const myArray<T>& array);
public:myArray(int size) {this->m_size = size;pAddress = new T[size]; }myArray(const myArray<T>& array) {this->m_size = array.m_size;this->pAddress = new T[array.m_size]; copy(array.pAddress, array.pAddress + array.m_size, this->pAddress);}~myArray() {if (pAddress != nullptr) {delete[] pAddress;  pAddress = nullptr;}}// array = {1,2,3,4,5}myArray& operator=(initializer_list<T> list) {if (this->pAddress != nullptr) {delete[] this->pAddress;this->pAddress = nullptr;}this->m_size = list.size();this->pAddress = new T[m_size];copy(list.begin(), list.end(), this->pAddress);return *this;}// array1 = array2myArray& operator=(const myArray<T>& array) {if (this != &array) {  // 自赋值检查if (this->pAddress != nullptr) {delete[] this->pAddress;  this->pAddress = nullptr;}this->m_size = array.m_size;this->pAddress = new T[array.m_size]; copy(array.pAddress, array.pAddress + array.m_size, this->pAddress);}return *this;}// array = (T *)arrmyArray& operator=(const T* array) {for (int i = 0; i < m_size; i++) {pAddress[i] = array[i];}return *this;}// array[0]T &operator[](int num) {return this->pAddress[num];}// 尾插法// 尾删法private:T* pAddress;int m_size;
};template<class T>
ostream& operator<<(ostream& cout, const myArray<T>& array) {cout << "[";for (int i = 0; i < array.m_size; i++) {cout << array.pAddress[i];if (i != array.m_size - 1) cout << ", ";  }cout << "]";return cout;
}