Behavioral mode-intermediary mode

1. Model motivation

 

 

 

2. Mode definition

 

3. Pattern structure

 

 

 

 

 4. Pattern analysis

 

 

 

 5. Examples:

 

 

 

 

 

 

 

 

 

 

 

 

 

Video link: B station review. . . .

 

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Origin www.cnblogs.com/ymym/p/12690400.html