Object-Oriented Design Principles (I) SRP (single responsibility principle)

SRP (single responsibility principle, single responsibility principle)

A class should have only one reason to change.

 

One class is better to do only one thing. There is only one reason for its change.
A class has only one reason for its change. Otherwise, reconstruction should be considered.
A single responsibility principle is determined by the reasons for changes, rather than functional responsibilities. Although a job is often the axis of change, sometimes it is not necessary to review the situation.
Test-driven development helps design the rational separation function.
Separation of duties can be performed in facade or proxy mode.
A class should have only one reason for its change. Instead of encapsulating the different responsibilities of the reasons for the change, it should be isolated.