生命周期
time:26_1_17
析构
1.{}范围内进行释放
2.如果没有保存;结束后释放
左指右值
& 左指 ;结束后释放
&& 右指所有权,不会随意释放
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| # include <iostream> # include <utilty>
class Mystring{ private: char *data; public: Mystring(const char *str = ""){ data = new char[strlen(str)+1]; strcpy(data, str); } ~Mystring*(){ delete[] data; } Mystring & operatir = (Mystring && other){ if(other.data != this.data){ data = other.data; other.data = nullptr; } return this; } }
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