The Definitive Refactoring Guide, Fully Revamped for Ruby
With refactoring, programmers can transform even the most chaotic
software into well-designed systems that are far easier to evolve and
maintain. What's more, they can do it one step at a time, through a
series of simple, proven steps. Now, there's an authoritative and
extensively updated version of Martin Fowler's classic refactoring book
that utilizes Ruby examples and idioms throughout-not code adapted from
Java or any other environment.
The authors introduce a detailed catalog of more than 70 proven Ruby
refactorings, with specific guidance on when to apply each of them,
step-by-step instructions for using them, and example code illustrating
how they work. Many of the authors' refactorings use powerful
Ruby-specific features, and all code samples are available for download.
Leveraging Fowler's original concepts, the authors show how to perform
refactoring in a controlled, efficient, incremental manner, so you
methodically improve your code's structure without introducing new bugs.
Whatever your role in writing or maintaining Ruby code, this book will
be an indispensable resource.
This book will help you
- Understand the core principles of refactoring and the reasons for
doing it
- Recognize "bad smells" in your Ruby code
- Rework bad designs into well-designed code, one step at a time
- Build tests to make sure your refactorings work properly
- Understand the challenges of refactoring and how they can be overcome
- Compose methods to package code properly
- Move features between objects to place responsibilities where they
fit best
- Organize data to make it easier to work with
- Simplify conditional expressions and make more effective use of
polymorphism
- Create interfaces that are easier to understand and use
- Generalize more effectively
- Perform larger refactorings that transform entire software systems
and may take months or years
- Successfully refactor Ruby on Rails code
