Practical Object-Oriented Design in Ruby

Practical Object-Oriented Design in Ruby Practical Object-Oriented Design, An Agile Primer Using Ruby (POODR) is a programmers tale about how to write object-oriented code. Written by Sandi Metz, it explains object-oriented design (OOD) using realistic, understandable examples. POODR* is a practical, readable introduction to how OOD can lower your costs and improve your applications.