01/23

 

In software Design,

The only unchanged  thing in the SDLC is the change.

 

Software Design Principle:

• Strong cohesion
• Low Coupling

Scalable :

伸缩(

规模可变化, performance

)

Extensible:

扩展 

Good practice in QC

• if possible , pair programming



• if not , code review



• Unit Test Framework :
  
  
  
  • For every new object , need to write unit test method in the class(TDD)
  
  
  
  • Befenit: the created object has to be very independent  with strong cohesion and low coupling. Force designer to think through the whole design .
  
  
  
  

To Page (57)