Practical Object-Oriented Design

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.

POODR will help you:

• Decide what belongs in a single class
• Avoid entangling objects that should be kept separate
• Define flexible interfaces among objects
• Reduce programming overhead costs with duck typing
• Successfully apply inheritance
• Build objects via composition
• Design cost-effective tests
• Craft simple, straightforward, understandable code

If your code is killing you and the joy is gone, POODR has the cure.