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Principles of Object Oriented Programming

Principles to keep in mind

  1. Encapsulate what varies.
  2. Code to the interface, not to the implementation.
  3. Favor composition over inheritance.
  4. Strive for loosely coupled designs between objects that interact.
  5. Classes should be open for extension but closed for modifications.
  6. Depend on abstractions. Do not depend on concrete classes.
  7. A class should have only one reason to change.

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