Object design style guide by Matthias Noback

Objects are the central concept of languages like Java, Python, C#. Applying best practices for object design means that your code will be easy to read, write, and maintain.

This book captures dozens of techniques for creating pro-quality OO code that can stand the test of time.

Examples are in an instantly-familiar pseudocode, teaching techniques you can apply to any OO language, from C++ to PHP.