Is there a moment when you write code that makes you and your brothers feel messy?
Is there a moment when a piece of code is in front of you, but you can't read it?
Is there a moment when you spend a long, long time reading code written by someone else?
Is there a moment when your parameters are too long but you don't know what to do?
Refactoring code is a skill every programmer needs to have!
The following is the organized refactoring principle learning mind map!
