Question

What principles do you generally follow when doing class design?

Answer 1

Principles Of Object Oriented Class Design (the "SOLID" principles)

• SRP: The Single Responsibility Principle A class should have one, and only one, reason to change.
• OCP: The Open Closed Principle You should be able to extend a classes behavior, without modifying it.
• LSP: The Liskov Substitution Principle Derived classes must be substitutable for their base classes.
• ISP: The Interface Segregation Principle Make fine grained interfaces that are client specific.
• DIP: The Dependency Inversion Principle Depend on abstractions, not on concretions.

Source: http://butunclebob.com/ArticleS.UncleBob.PrinciplesOfOod

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