Sergio Rodríguez serodriguez68

## 1_poodir_notes.md

      
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                Notes From "Practical Object-Oriented Design In Ruby" by Sandi Metz
              
          
    Practical Object-Oriented Design in  Ruby - Notes

Notes by: Sergio Rodriguez
Book by: Sandi Metz

Chapter 1 - Object Oriented Design

Why Design?


Changes in applications are unavoidable.
Change is hard because of the dependencies between objects
The sender of the message knows things about the receiver