Concise code-class

(1) organization of classes: Private tools (functions) that generally arrange ordered public static variables, Private Static variables, private object variables, public functions, and public function calls)

(2) the class should be short:

Single principle of responsibility and responsibility: There is only one reason for modifying a category or module;

Cohesion: there are also many variables for method operations, and the cohesion is higher;

To maintain cohesion, you will get many short classes.

 

(3) organize for modification: organize classes to reduce the risk of modification

Isolated modification: intercept interfaces and abstract classes to isolate the impact of modifying details

Dip dependency leads to the principle that classes should depend on abstraction rather than on details