Clean Ruby
Clean Ruby
A guide to crafting better Ruby code
About the Book
This book is now Clean Ruby and can be purchased on APRESS's website! Read More
Messy code can cripple productivity and make life unpleasant for developers. Bad code is hard to test and is the source of bugs. Each day, we waste countless hours struggling with poorly written Ruby code. Clean Ruby will teach you how to make better decisions and have you writing cleaner code.
This book is the culmination of many years of experience across numerous codebases both large and small. You will learn from first-hand experience. Each chapter covers the topics you need to know to make better decisions. Many books will tell you how to do something, but this book will tell you why you should do it. Start writing code you love.
Books like Clean Code by Robert C. Martin or Code Complete by Steve McConnell are great resources for learning these concepts but are for developers who use compiled languages like C, C#, and Java. Clean Ruby is written for Ruby developers. There is no need to learn a new language or translate concepts to Ruby.
Is this book right for you?
- You've graduated from one of many Ruby on Rails dev bootcamps
- You've been programming for a couple of years in Ruby on Rails
What you will learn?
Build better classes to help promote code reuse. Create more straightforward methods to increase productivity. Improve your decision making and make better, smarter choices. These are the things you will learn when reading Clean Ruby:
- Learn how to identify bad code and fixed it.
- Learn how to create quality names for all of your variables, classes and modules.
- Learn how to create better, concise classes.
- Learn how to improve the quality of your methods.
- Learn how to properly use modules.
- Learn how to improve the clarity of your boolean logic.
- Learn techniques to improve when and how you refactor.
How will you learn?
This book is filled with tons of code. You will see examples of common mistakes and how to fix them. Each example has been carefully considered based on real-world experience.
You will learn to think differently about your code. Every chapter will make your reconsider past coding decisions. Open your eyes to a new world of Ruby development by reading Clean Ruby.
What makes it ruby specific?
- All the code examples are written in Ruby. No need to learn a new language.
- Topics will highlight techniques specific to Ruby.
- Topics factor in the dynamic nature of Ruby.
About the Author
Table of Contents
-
Forward
- Who should read this book?
-
The Qualities of Clean Code
- Readability
- Extensibility
- Simplicity
-
Naming Things
-
Variables
- Naming conventions
- The data
- Length
- Avoid unnecessary information
- Avoid conjunctions
- Only alpha characters
-
Methods
- Use verbs
- Return value
- Bang methods
-
Classes
- Purpose
- Role
- Modules
-
Variables
-
Creating Quality Methods
-
Parameters
- Use fewer parameters
- Parameter order
- Return Values
- Guard Clause
-
Length
- How to shorten a method
- Too short
-
Comments
- Quality comments
- Stale comments
- Comments and refactoring
- Limit Nesting
-
Parameters
-
Using Boolean Logic
- Using a Variable
- Using a Method
- Unless
- Ternary operator
- Double negative
-
Truthy and Falsy
- Truthy Values
- Falsy Values
- & vs &&
-
Classes
-
Initialize Method
- Keep it Simple
- Avoiding Errors
- Too many parameters
- Class methods vs instance methods
- Instance variables
- Private methods
- Method order
- Moving methods to a module
- Limiting Inheritance
-
Initialize Method
-
Refactoring
- No change too small
- Tests
- Single Responsibility Principle
-
Test-Driven Development (TDD)
- Start with tests
- Implement our code
- More Tests
- Clean Tests
- Wrapping up
- Notes
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