26 10 2010

Generally accepted principles of software architecting

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.

DIP - The Dependency Inversion Principle-
Depend on abstractions, not on concretions.

ISP - The Interface Segregation Principle-
Make fine grained interfaces that are client specific

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