The novice to learn, and the standard answer

CodePudding user response:

Write about yourself, wrong understanding will never ask again

CodePudding user response:

I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10581430.html
I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10768339.html