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Clean Code: A Handbook of Agile Software Craftsmanship 1st Edition

by Robert C. Martin (Author)

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Even bad code can function. But if code isn’t clean, it can bring a development organization to its knees. Every year, countless hours and significant resources are lost because of poorly written code. But it doesn’t have to be that way.

Noted software expert Robert C. Martin, presents a revolutionary paradigm with Clean Code: A Handbook of Agile Software Craftsmanship. Martin, who has helped bring agile principles from a practitioner’s point of view to tens of thousands of programmers, has teamed up with his colleagues from Object Mentor to distill their best agile practice of cleaning code “on the fly” into a book that will instill within you the values of software craftsman, and make you a better programmer―but only if you work at it.

What kind of work will you be doing? You’ll be reading code―lots of code. And you will be challenged to think about what’s right about that code, and what’s wrong with it. More importantly you will be challenged to reassess your professional values and your commitment to your craft.

Clean Codeis divided into three parts. The first describes the principles, patterns, and practices of writing clean code. The second part consists of several case studies of increasing complexity. Each case study is an exercise in cleaning up code―of transforming a code base that has some problems into one that is sound and efficient. The third part is the payoff: a single chapter containing a list of heuristics and “smells” gathered while creating the case studies. The result is a knowledge base that describes the way we think when we write, read, and clean code.

Readers will come away from this book understanding

How to tell the difference between good and bad code
How to write good code and how to transform bad code into good code
How to create good names, good functions, good objects, and good classes
How to format code for maximum readability
How to implement complete error handling without obscuring code logic
How to unit test and practice test-driven development
What “smells” and heuristics can help you identify bad code

This book is a must for any developer, software engineer, project manager, team lead, or systems analyst with an interest in producing better code.

ISBN-10

9780132350884
ISBN-13

978-0132350884
Edition

1st
Publisher

Pearson
Publication date

2008
August 1
Part of series

Robert C. Martin
Language

EN
English
Dimensions

7.0 x 1.1 x 9.2
inches
Length

464
Pages
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Popular Highlights in this book

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Functions should either do something or answer something, but not both.
Highlighted by 3,233 Kindle readers
The proper use of comments is to compensate for our failure to express ourself in code.
Highlighted by 2,888 Kindle readers
FUNCTIONS SHOULD DO ONE THING. THEY SHOULD DO IT WELL. THEY SHOULD DO IT ONLY.
Highlighted by 2,635 Kindle readers

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For those who want to increase their skills and proficiency to the level of a Master Craftsman.
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From the Publisher

From the Preface of "Clean Architecture"

“…The rules of software architecture are the rules of ordering and assembling the building blocks of programs. And since those building blocks are universal and haven’t changed, the rules for ordering them are likewise universal and changeless.

But one thing has changed: Back then, we didn’t know what the rules were. Consequently, we broke them, over and over again. Now, with half a century of experience behind us, we have a grasp of those rules.

And it is those rules—those timeless, changeless, rules—that this book is all about.”

— Robert C. "Uncle Bob" Martin


Clean Code: A Handbook of Agile Software Craftsmanship	The Clean Code: Practical Advices for the Professional Programmer	Clean Craftsmanship: Desciplines, Standards, and Ethics	Clean Agile: Back to Basics	Clean Architecture: A Craftsman's Guide to Software Structure and Design
Best agile practices of cleaning code “on the fly” Software Craftsmanship.	Endure and succeed amidst swirling uncertainty and nonstop pressure.	Picks up where Clean Code leaves off, outlining additional ways to write quality and trusted code you can be proud of every day.	A clear and concise guide to basic Agile values and principles. Perfect for those new to Agile methods and long-time developers who want to simplify approaches for the better.	Direct, no-nonsense answers to key architecture and design questions.
"It is the best pragmatic application of Lean principles to software I have ever seen in print." —James O. Coplien, Founder of the Pasteur Organizational Patterns project	“Some technical books inspire and teach; some delight and amuse. Rarely does a technical book do all four of these things.” — George Bullock	". . . [A] timely and humble reminder of the ever-increasing complexity of our programmatic world and how we owe it to the legacy of humankind--and to ourselves--to practice ethical development.” — Stacia Heimgartner Viscardi, CST & Agile Mentor	“What is in the world of Agile development is nothing compared to what could be. This book is Bob’s perspective on what to focus on to get to that ‘what could be.’ And he’s been there, so it’s worth listening.” — Kent Beck	"A good architecture comes from understanding it more as a journey than as a destination, more as an ongoing process of enquiry than as a frozen artifact." — Kevlin Henney

Pick Up Where Clean Code Leaves Off

"As software developers, we have to continually solve important problems for our employers, customers, colleagues, and future selves. Getting the app to work, though difficult, is not enough, it does not make you a craftsman. With an app working, you have passed the app-titude test. You may have the aptitude to be a craftsman, but there is more to master. In these pages, Bob expresses clearly the techniques and responsibilities to go beyond the app-titude test and shows the way of the serious software craftsman."

— James Grenning, author of Test-Driven Development for Embedded C and Agile Manifesto co-author

Editorial Reviews

From the Back Cover

Even bad code can function. But if code isn't clean, it can bring a development organization to its knees. Every year, countless hours and significant resources are lost because of poorly written code. But it doesn't have to be that way.

Noted software expert Robert C. Martin presents a revolutionary paradigm with Clean Code: A Handbook of Agile Software Craftsmanship. Martin has teamed up with his colleagues from Object Mentor to distill their best agile practice of cleaning code “on the fly” into a book that will instill within you the values of a software craftsman and make you a better programmer―but only if you work at it.

What kind of work will you be doing? You'll be reading code―lots of code. And you will be challenged to think about what's right about that code, and what's wrong with it. More importantly, you will be challenged to reassess your professional values and your commitment to your craft.

Clean Code is divided into three parts. The first describes the principles, patterns, and practices of writing clean code. The second part consists of several case studies of increasing complexity. Each case study is an exercise in cleaning up code―of transforming a code base that has some problems into one that is sound and efficient. The third part is the payoff: a single chapter containing a list of heuristics and “smells” gathered while creating the case studies. The result is a knowledge base that describes the way we think when we write, read, and clean code.

Readers will come away from this book understanding

How to tell the difference between good and bad code
How to write good code and how to transform bad code into good code
How to create good names, good functions, good objects, and good classes
How to format code for maximum readability
How to implement complete error handling without obscuring code logic
How to unit test and practice test-driven development

This book is a must for any developer, software engineer, project manager, team lead, or systems analyst with an interest in producing better code.

About the Author

Robert C. “Uncle Bob” Martin has been a software professional since 1970 and an international software consultant since 1990. He is founder and president of Object Mentor, Inc., a team of experienced consultants who mentor their clients worldwide in the fields of C++, Java, C#, Ruby, OO, Design Patterns, UML, Agile Methodologies, and eXtreme programming.

Product details

ASIN ‏ : ‎ 0132350882
Publisher ‏ : ‎ Pearson; 1st edition (August 1, 2008)
Language ‏ : ‎ English
Paperback ‏ : ‎ 464 pages
ISBN-10 ‏ : ‎ 9780132350884
ISBN-13 ‏ : ‎ 978-0132350884
Item Weight ‏ : ‎ 1.75 pounds
Dimensions ‏ : ‎ 7 x 1.1 x 9.2 inches

Best Sellers Rank: #11,073 in Books (See Top 100 in Books)
- #2 in Software Design & Engineering
- #4 in Software Testing
- #5 in Software Development (Books)

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4.7 5,966 ratings

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Dean Wampler
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I run the engineering organization in IBM Research that is building "accelerated science" and digital health services. Previously, I developed Scala software at Lightbend and Domino Data Lab, and I helped spread the word about Ray at Anyscale. Besides Scala, my expertise includes MLOps, data systems, and the full software development lifecycle. I am also the author of several books:
-- "Programming Scala, Third Edition", a practical book for experienced software developers that introduces this important, modern programming language.
-- "Programming Hive", a comprehensive guide to Hive, the SQL tool for Hadoop (coauthors: Ed Capriolo and Jason Rutherglen).
-- "Functional Programming for Java Developers", a succinct introduction for Java developers to the concepts of functional programming, where I motivate its importance and demonstrate how to use FP concepts in Java programs.
-- I contributed to Robert Martin's classic, "Clean Code: A Handbook of Agile Software Craftsmanship"
You can find out more about me at these web sites:
-- http://deanwampler.com: My personal home page.
-- http://polyglotprogramming.com: Presentations, white papers, etc.
-- https://deanwampler.medium.com: My blog.
-- https://linkedin.com/in/deanwampler: Career
Social:
-- https://twitter.com/deanwampler
-- https://discuss.systems/@deanwampler
-- https://post.news/@deanwampler
My main hobby, photography:
-- https://www.flickr.com/photos/deanwampler/
-- https://glass.photo/bucktrends
-- https://vero.co/bucktrends
See more on the author's page
Robert C. Martin
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Robert Cecil Martin (colloquially known as Uncle Bob) is an American software engineer and author. He is a co-author of the Agile Manifesto.
Bio from Wikipedia, the free encyclopedeia. Photo by Tim-bezhashvyly (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0)], via Wikimedia Commons.
See more on the author's page

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Hafiz

Best reference book for coding

Reviewed in the United States on November 28, 2023

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Want to keep it as a reference in future.x

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Peter J. Hanson

Excellent for the whole team

Reviewed in the United States on December 29, 2015

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As CTO of a software company I co-founded, I'm not only looking for books that help me improve individually, but also books that the whole development team – from developers to architects – may find useful. Robert C. Martin’s Clean Code does both, and, like the good code described therein, it’s well written, clear, and easy to read. Martin includes many helpful examples and his suggestions are applicable to any programming language.

Ideally, each developer takes charge of their own education and is constantly improving their skillset, an aspect that Martin covers in The Clean Coder. I view it as an important part of my job to help my team improve. To do so, I distill a lot of written material down to actionable components and provide that to my development team. Concepts from Clean Code have become very helpful guides for them. Below are a few of my favorite takeaways.

The first is what Martin calls The Boy Scout Rule: “Leave the campground a little cleaner than you found it.” It’s a great concept, not only because it's simple to follow, but also because it has broad applicability and can be used on any project. Essentially, when a team member works on a piece of code, they should aim to improve it somehow by the time their task is finished. A few examples of this among many are: fixing an unclear variable name, breaking up a large function into smaller functions, or cleaning up a conditional for improved clarity. With everyone on the team doing this, the code improves over time and everyone feels responsible for the code whether they wrote it personally or not. Even if something can’t be addressed immediately, developers are encouraged to log the issues they see.

Another of my favorite takeaways is the Three Laws of TDD, a concept I was able to quickly roll out to the team as a framework to follow for how TDD should be conducted on a project. This virtually ensures that all of your product code has test coverage. It also helps make most of your code SOLID (https://en.wikipedia.org/wiki/SOLID_%28object-oriented_design%29), since code that is built in this fashion is structured with SOLID concepts in mind. This is a must for effective testing.

Finally, the topics of proper identifier names and commenting really resonated with me and my team. In our company, we tend to “adopt” existing codebases – projects that have already been started by other developers whose code is of widely varying quality. If we're lucky, it's structured well and demonstrates best practices and approaches in how it's constructed. Unfortunately, the code is sloppy at times and requires some TLC to get it in shape. A part of that process is understanding what the existing application does. As Clean Code correctly outlines, many comments are superfluous or even plain wrong and misleading. As a team, we don’t blindly trust the accuracy of existing comments and instead go right to the application’s code to determine what it does. This is where proper naming comes into play. With good names, the code reads like comments or as a narrative of what the application does, nullifying most needs for additional commenting. Simply put, the code comments itself. We also use refactoring tools to improve names and clean up comments as we go. Of course, by doing so, we’re also applying the Boy Scout Rule.

Overall, Clean Code is a wonderful book with much useful and immediately-applicable information for developers of all levels. If you're looking for a book that will help make you a better developer, this will.

19 people found this helpful

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Arijit Chakraborti

Learning to leave the code cleaner than before

Reviewed in the United States on September 16, 2017

Verified Purchase

As part of our learning activities, we learn quite a few programming languages. We also learn designs, patterns, good coding practices, and many more. We don't usually spend time to learn how to write a good, readable code. The relevance of this book is enormous. Not just the programmers should read it, the education providers should also read it. In fact, the education providers should plan to include this in their curriculum associated with every programming languages.

I started reading this book and finished it in almost three consecutive sittings. That way, the book is well structured, and the topics are well sequenced. The author cautioned at the beginning of the book that it is not for the armchair readers. The reader should spend adequate effort to read through the code examples, think through those, and try out some of those through self scribbling. This is indeed necessary for the coders. This is also necessary for the instructors of coding, or programming languages. I chose to skim through the examples with just enough thinking while paying attention to every detail of the English text. Such speed reading worked for me too. Such reading technique should work for all who are not into direct coding today, but was a programmer once upon a time, and spends a lot of time in conversing with the programmers nowadays.

Coming back to the content of the book - this was quite informative and thought provoking. I read it fully and tried to jot down my takeaways from this book reading. I have got six of them.

I learned the general rules for commenting, and summarized those in four points. I learned the general rules for code formatting, and summarized those in four points. I learned the general practice of code size - for a significant system, for a code file, for a typical function. I learned the general rules of organizing concepts and variables, and summarized those in five points. In fact, the definition of concepts was itself was a new learning for me. I learned the three laws of test driven development, rather I re-learned those once more while reading this book. Finally, I jotted down the final takeaway - leave the code cleaner than what you had started with.

The book is full of good references, in fact at the end of every chapter. I tried to summarize the list of further readings, and I got another five book titles listed in my to-read list. I read it on my Kindle device, and on my desktop using Amazon Cloud Reader - the formatting was good.

As coders, we all have the responsibility to leave the code cleaner than what we start with. As code reviewers, we all have the responsibility to comment on the cleanliness of the codes. As the supervisor or manager of coders, we all have the responsibility to communicate the importance of clean coding and to encourage coders towards clean coding. I will recommend to all these group of people to read this book, and practice the clean coding techniques described here.

Good work indeed!

4 people found this helpful

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Rashad

The only thing bothered me was the careless packaging

Reviewed in the United States on August 4, 2023

Verified Purchase

Packing could have been better. it was just thrown into a large box without fixing and therefore, the hardcover is damaged like a used book.
Other than that all is good with delivery, book quality and content. Highly recommended

2 people found this helpful

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Dan

every developer should read this book

Reviewed in the United States on June 28, 2023

Verified Purchase

I work with a code base that falls into a lot of uncle bob says not to do. As I’m reading this, I feel empowered to be a better developer and make sure I write clean code. My boss said this was a great book and after reading it I feel it is too

5 people found this helpful

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Jeffry K. Lefevre

Knowledge in This Tome is the Demarcation Between Programmers and Engineers

Reviewed in the United States on March 9, 2023

Verified Purchase

There are one or two chapters that don't apply if you're not programming in Java, but the vast majority of what you read here can be transformative when put into practice. Don't let the book's age fool you. These issues are as relevant as ever.

Have you heard of SOLID? You'll learn about it here. Code smells? Learn how to avoid them here. Need code that is readable, maintainable, and usable, but seems like an impossibility? You'll get there by applying what you learn here.

This isn't a book you read once and put down. You should get to know what's in it by reading and re-reading.

7 people found this helpful

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Lucas Oorschot

Great overview of what clean code is all about and why it matters

Reviewed in Germany on October 22, 2023

Verified Purchase

This book points out loads of things you can do to make/keep your code "clean", how to spot code that could be done better and why it all matters.

By itself, nothing in this book may come as a big surprise, but bringing it all together in the typical accessible, easy-to-read and humorous style of "Uncle Bob" makes this a great book to hold up a mirror to ones own coding style and almost automatically pick up a few improved habits on the way.

This book will definitely make you look twice at the next code you write to see if it looks "clean" enough for you. So.....highly recommended for anybody who is serious about writing code so that others (or you, half a year later) can read, understand, maintain and extend your code.

Marcus

Un classico

Reviewed in Italy on December 5, 2023

Verified Purchase

Un libro che non può mancare sugli scaffali dei coders, forse troppo esempi in un linguaggio in particolare, ma ricco di concetti essenziali

Translate review to English

Andrej Lavrinovic

Everyone must read.

Reviewed in the United Kingdom on November 1, 2023

Verified Purchase

So good. So easy formulated. So useful. A lot of things are so obvious, but for some reason not many developers are following such elementary rules. Highly recommend to read, and doesn't metter if you experienced developer or just begginer. I also wish this book to be translated on indian languages. Guys, I very much like you. We are very close mentally. I have a lot of indian friends due to proffession. But, the way you coding is .... pleas, please, please - read this book.

Ultrafastfreddy

Für jeden Programmierer essentiell!

Reviewed in Germany on November 25, 2023

Verified Purchase

Aus meiner Sicht das beste Buch, um sauberen Code zu produzieren. Am Ende des Tages zählt nur der Code, da hilft auch noch so ein komplexer Prozess nichts, wenn der Code nicht passt.

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Client d'Amazon

Très bon

Reviewed in France on October 13, 2023

Verified Purchase

Un bouquin à faire lire à chaque développeur, très instructif

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