Clean Ruby: A Guide to Crafting Better Code for Rubyists

Carleton DiLeo

115 pages, parution le 21/12/2019

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Résumé

Learn how to make better decisions and write cleaner Ruby code. This book shows you how to avoid messy code that is hard to test and which cripples productivity. Author Carleton DiLeo shares hard-learned lessons gained from years of experience across numerous codebases both large and small. Each chapter covers the topics you need to know to make better decisions and optimize your productivity. Many books will tell you how to do something; this book will tell you why you should do it. Start writing code you love.

What You Will Learn

Build better classes to help promote code reuse
Improve your decision making and make better, smarter choices
Identify bad code and fixed it
Create quality names for all of your variables, classes, and modules
Write better, concise classes
Improve the quality of your methods
Properly use modules
Clarify your Boolean logic
See when and how you refactor
Improve your understanding of TDD and write better tests

Who This Book Is For
This book is written for Ruby developers. There is no need to learn a new language or translate concepts to Ruby.

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

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

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

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

Carleton DiLeo has been writing code ever since he built his first computer from parts in a dumpster. He has written code from high-traffic websites to back-end big data systems for video games. This wide base of knowledge provides Carleton with a unique perspective when writing Ruby code.

Caractéristiques techniques

	PAPIER
Éditeur(s)	Apress
Auteur(s)	Carleton DiLeo
Parution	21/12/2019
Nb. de pages	115
EAN13	9781484255452

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Clean Ruby: A Guide to Crafting Better Code for Rubyists

Résumé

Caractéristiques techniques

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