Practical Object-Oriented Design

Learn how to create maintainable and extensible Ruby code with powerful object-oriented design techniques in Practical Object-Oriented Design. With downloadable examples and proven practices distilled from a lifetime of conversations and presentations, expert Sandi Metz shows you how to build new applications that can handle success and how to fix existing code that's impossible to change. Whether you're a beginner or an expert, this fully updated guide will help you achieve superior outcomes in Ruby 2.X.