I've been programming about 17 years and consider myself above average programmer. Yet, this book made me feel like I'm actually horrible coder. I've always gotten my tasks done but I didn't pay attention on refactoring to clean up the code. I'm already behind and got a demo coming up in few days. As I'm reading my guilty verdicts on all his 'bad code' examples, it inspire me to care about 'coding' yet again. It can be fun and it's not all about getting the job done. What's sad about the reality is that 'bad code' will continually increase over time because people don't realize what 'bad code' can do in the long run.
Every programmer regardless of experience should read this book. Thanks!
Clean Code: A Handbook of Agile Software Craftsmanship 1st Edition, Kindle Edition


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0132350882
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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
--This text refers to the paperback edition.
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 text refers to the paperback edition.
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.
--This text refers to the paperback edition.
Product details
- ASIN : B001GSTOAM
- Publisher : Pearson; 1st edition (August 1, 2008)
- Publication date : August 1, 2008
- Language : English
- File size : 42806 KB
- Simultaneous device usage : Up to 5 simultaneous devices, per publisher limits
- Text-to-Speech : Enabled
- Enhanced typesetting : Enabled
- X-Ray : Not Enabled
- Word Wise : Not Enabled
- Print length : 1168 pages
- Lending : Not Enabled
-
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#17,037 in Kindle Store (See Top 100 in Kindle Store)
- #3 in Software Development (Kindle Store)
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- #18 in Software Development (Books)
- Customer Reviews:
Customer reviews
4.7 out of 5 stars
4.7 out of 5
2,895 global ratings
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Reviewed in the United States on December 30, 2016
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229 people found this helpful
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Reviewed in the United States on November 3, 2018
Much of the information in this books is eye opening, particularly the chapters on functions, classes, and code smells. However, a serious problem is that this book is very, very Java-centric, and it is clearly a product of its 2009 copyright date. Many of the chapters have been made moot (PEP8 and Prettier making the formatting chapter largely obsolete, for example), and a few aren't totally applicable to any other language.
Note about buying a new, physical version from Amazon: don't. The book will be damaged in shipping as it just comes in a padded envelope and will be dog-eared like a used book before you receive it. See my picture.
Verified Purchase
3.5 stars. I'm rounding up.
Much of the information in this books is eye opening, particularly the chapters on functions, classes, and code smells. However, a serious problem is that this book is very, very Java-centric, and it is clearly a product of its 2009 copyright date. Many of the chapters have been made moot (PEP8 and Prettier making the formatting chapter largely obsolete, for example), and a few aren't totally applicable to any other language.
Note about buying a new, physical version from Amazon: don't. The book will be damaged in shipping as it just comes in a padded envelope and will be dog-eared like a used book before you receive it. See my picture.
Much of the information in this books is eye opening, particularly the chapters on functions, classes, and code smells. However, a serious problem is that this book is very, very Java-centric, and it is clearly a product of its 2009 copyright date. Many of the chapters have been made moot (PEP8 and Prettier making the formatting chapter largely obsolete, for example), and a few aren't totally applicable to any other language.
Note about buying a new, physical version from Amazon: don't. The book will be damaged in shipping as it just comes in a padded envelope and will be dog-eared like a used book before you receive it. See my picture.

4.0 out of 5 stars
Good, but tightly coupled to Java and starting to age poorly
By Jim on November 3, 2018
3.5 stars. I'm rounding up.By Jim on November 3, 2018
Much of the information in this books is eye opening, particularly the chapters on functions, classes, and code smells. However, a serious problem is that this book is very, very Java-centric, and it is clearly a product of its 2009 copyright date. Many of the chapters have been made moot (PEP8 and Prettier making the formatting chapter largely obsolete, for example), and a few aren't totally applicable to any other language.
Note about buying a new, physical version from Amazon: don't. The book will be damaged in shipping as it just comes in a padded envelope and will be dog-eared like a used book before you receive it. See my picture.
Images in this review

85 people found this helpful
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Reviewed in the United States on December 8, 2018
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Stay far away from this book of you are not an OOP programmer. All examples are in Java but most C++ programmers should be able to mentally translate the ideas. There is also too much focus on Java specific tooling. While there are some good points this book makes, it disregards many good programming techniques used in standard imperative languages without objects. It completely disregards functional languages and given gives some terrible advice when it comes to writing good code in a functional style. Overall it's pretty good up to about chapter 7. After that it's pretty much downhill.
42 people found this helpful
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Reviewed in the United States on June 6, 2018
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This books is a fake. Don't buy it. Look at the images I posted.

1.0 out of 5 stars
It's fake.
By Juan M. Paulino on June 6, 2018
This books is a fake. Don't buy it. Look at the images I posted.
By Juan M. Paulino on June 6, 2018
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75 people found this helpful
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Reviewed in the United States on July 9, 2018
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The content is good, but the soft cover version of the book is of a poor print quality, it looks like it was printed from photocopies.
I've heard that originally, the print quality was ok, well, it's not anymore.
It's still readable, but I would never buy it if I new about the print quality.
Should've read other reviews.
I've heard that originally, the print quality was ok, well, it's not anymore.
It's still readable, but I would never buy it if I new about the print quality.
Should've read other reviews.
41 people found this helpful
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Reviewed in the United States on May 21, 2018
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Bought the book due to a push at work to read this, the book was bought through Amazon.com Services, Inc. and like others have said I received a copy with huge margins on each page, a blurry cover, and no spine or back. I didn't have any of the problems of the binding falling apart yet, the text is readable its just the code samples are a bit hard to read.
36 people found this helpful
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Reviewed in the United States on March 30, 2017
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I've been reading this for the past few weeks and just by applying the principles and concepts I've learned so far, I've become a better and more mature developer. The lead dev on my team recently noticed and commented on the positive changes in my code as of late. He was also impressed when I used what I learned to refactor a bit of our code base. Even though it's Java-based and I am a Go developer with a background that is primarily JS, I've been able to use the ideas in this book to clean up my own code, both personally and professionally.
44 people found this helpful
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Reviewed in the United States on July 9, 2017
Verified Purchase
This is a critical thinkers book. It gives the reader a basis to use within their own programming style and language of choice.
The code examples are written in Java and are there to show how to refactor code based on the principles and reasoning within the book.
This is not a book that I take as a specific do this or else, more of a guide that explains why you should consider writing code in the way described.
Essentially the lesson is to create code that is small, has a specific purpose and does that one thing.
When functions or methods begin to stray into doing multiple things spin those code pieces off on their own and repeat.
What I get from this book is a mindset or way of thinking about programming. To create code that is cohesive, is small, does not have unnecessary parts. When these principles are broken find a way to refactor or eliminate the additional pieces. It is not just about taking away or keeping code small but adopting a way of thinking about the design of the program and how each piece interacts with the other parts.
The suggested line lengths of functions mentioned and other very specific examples is more where your critical thinking comes into play. I do not program in Java so many of the language specific scenarios do not apply to me. in some languages you just can't have or do some of the things suggested. Though as a general rule of thumb I find the examples helpful and when I mean general rule of thumb I do not mean a specific line count or size but a simplistic do as little as possible to achieve the goal. Simplify. Simplify. Simplify.
I purchased and received the 16th printing of this book, published February 2016.
There are no weird formatting or printing issues with the book as others have mentioned.
If you have the ability to reason and think critically, being able to adapt examples and suggestions to your own style and language then I highly recommend this book. The contents are NOT common sense and do not come naturally to the uninitiated. The book does take you by the hand in a certain way leading you from the process of just make the program work to thinking about the logic design and function of your programs.
When you are in situations where redesign is not possible the principles learned from this book will help you to refactor when possible and write new code that is better, smaller, tighter. Making you a better more valuable programmer.
The code examples are written in Java and are there to show how to refactor code based on the principles and reasoning within the book.
This is not a book that I take as a specific do this or else, more of a guide that explains why you should consider writing code in the way described.
Essentially the lesson is to create code that is small, has a specific purpose and does that one thing.
When functions or methods begin to stray into doing multiple things spin those code pieces off on their own and repeat.
What I get from this book is a mindset or way of thinking about programming. To create code that is cohesive, is small, does not have unnecessary parts. When these principles are broken find a way to refactor or eliminate the additional pieces. It is not just about taking away or keeping code small but adopting a way of thinking about the design of the program and how each piece interacts with the other parts.
The suggested line lengths of functions mentioned and other very specific examples is more where your critical thinking comes into play. I do not program in Java so many of the language specific scenarios do not apply to me. in some languages you just can't have or do some of the things suggested. Though as a general rule of thumb I find the examples helpful and when I mean general rule of thumb I do not mean a specific line count or size but a simplistic do as little as possible to achieve the goal. Simplify. Simplify. Simplify.
I purchased and received the 16th printing of this book, published February 2016.
There are no weird formatting or printing issues with the book as others have mentioned.
If you have the ability to reason and think critically, being able to adapt examples and suggestions to your own style and language then I highly recommend this book. The contents are NOT common sense and do not come naturally to the uninitiated. The book does take you by the hand in a certain way leading you from the process of just make the program work to thinking about the logic design and function of your programs.
When you are in situations where redesign is not possible the principles learned from this book will help you to refactor when possible and write new code that is better, smaller, tighter. Making you a better more valuable programmer.
34 people found this helpful
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Top reviews from other countries

Sam Tuke
3.0 out of 5 stars
Fake copy, printed by Amazon, but readable
Reviewed in the United Kingdom on May 12, 2018Verified Purchase
This is a review of the printing (physical product) not the content. It appears to be fake. The front page is highly pixellated, the back cover and spine are both white blank. The pages are too large for the content resulting in considerable whitespace around the page content. Overall the book is larger than the "real" edition, and heaver as a result. The penultimate page states "Printed in Poland by Amazon fulfillment". This book is not printed by the original publisher, Prentice Hall, therefore.
In all the book is still perfectly usable and the quality issues do not affect the paper quality or resolution of the pages themselves. The only real downsides are the ugly front cover and larger/heavier than necessary physical form. The situation regarding intellectual property is unclear.
My verdict: buy it anyway, but be aware its not the Real McCoy.
In all the book is still perfectly usable and the quality issues do not affect the paper quality or resolution of the pages themselves. The only real downsides are the ugly front cover and larger/heavier than necessary physical form. The situation regarding intellectual property is unclear.
My verdict: buy it anyway, but be aware its not the Real McCoy.

3.0 out of 5 stars
Fake copy, printed by Amazon, but readable
Reviewed in the United Kingdom on May 12, 2018
This is a review of the printing (physical product) not the content. It appears to be fake. The front page is highly pixellated, the back cover and spine are both white blank. The pages are too large for the content resulting in considerable whitespace around the page content. Overall the book is larger than the "real" edition, and heaver as a result. The penultimate page states "Printed in Poland by Amazon fulfillment". This book is not printed by the original publisher, Prentice Hall, therefore.Reviewed in the United Kingdom on May 12, 2018
In all the book is still perfectly usable and the quality issues do not affect the paper quality or resolution of the pages themselves. The only real downsides are the ugly front cover and larger/heavier than necessary physical form. The situation regarding intellectual property is unclear.
My verdict: buy it anyway, but be aware its not the Real McCoy.
Images in this review

48 people found this helpful
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Little Bobby Tables
2.0 out of 5 stars
I mean he calls himself Uncle Bob...
Reviewed in the United Kingdom on August 9, 2019Verified Purchase
I have worked in both legacy code bases and green field projects over a long career. I bought this book many years ago, since I always am willing to learn, and had ample time to reflect on it. It's advice is not too bad, mostly obvious, but rather shallow and focused on the details I can quickly teach graduates, rather than the real depth I want them to think about. Still I didn't think strongly about posting a negative review until I looked at one of the author's own codebases, FitNesse. It defies so many of the author's own principles it beggers belief, but moreover is has a dreadful design for important reasons he doesn't cover. In this I am looking throughout the project's history: it's a house of cards. And that is very telling. Because here is a mediocre book from an author who rather incredibly calls himself "Uncle Bob", as if he is some friendly elder dispensing wisdom. Why do we fall for it, in a field of engineering and science? He would be better to mend his own fences before teaching others how to paint them.
27 people found this helpful
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bomfirit
1.0 out of 5 stars
Gedrucktes PDF!!!
Reviewed in Germany on November 7, 2017Verified Purchase
Das Buch sollte jeder Entwickler kennen. Pflichtlektüre! Aber, bitte nicht hier bestellen! Was man bekommt ist ein gedrucktes PDF, welches dummerweise in der falschen Papiergröße bedruckt ist. Man hat also an den Rändern riesige weiße Flächen. Das Buch ist daher unnötigerweise ca 25% größer als das Original. Zudem ist die verwendete Tinte sehr hell. Die Codebeispiele sind kaum zu lesen. Das Cover ist im Vergleich zum Original verwaschen. Das Buch geht sofort zurück und wird im Laden (zur Ansicht) bestellt. Jetzt weiß ich warum die Lieferzeit auch 3 Wochen betrug. Das Buch wird offensichtlich auf Anfrage gedruckt.
Bei den beigefügten Bildern sieht man das Original (von der Firma) und das hier bestellte Buch (PDF Druck)
Bei den beigefügten Bildern sieht man das Original (von der Firma) und das hier bestellte Buch (PDF Druck)

1.0 out of 5 stars
Gedrucktes PDF!!!
Reviewed in Germany on November 7, 2017
Das Buch sollte jeder Entwickler kennen. Pflichtlektüre! Aber, bitte nicht hier bestellen! Was man bekommt ist ein gedrucktes PDF, welches dummerweise in der falschen Papiergröße bedruckt ist. Man hat also an den Rändern riesige weiße Flächen. Das Buch ist daher unnötigerweise ca 25% größer als das Original. Zudem ist die verwendete Tinte sehr hell. Die Codebeispiele sind kaum zu lesen. Das Cover ist im Vergleich zum Original verwaschen. Das Buch geht sofort zurück und wird im Laden (zur Ansicht) bestellt. Jetzt weiß ich warum die Lieferzeit auch 3 Wochen betrug. Das Buch wird offensichtlich auf Anfrage gedruckt.Reviewed in Germany on November 7, 2017
Bei den beigefügten Bildern sieht man das Original (von der Firma) und das hier bestellte Buch (PDF Druck)
Images in this review



Thomas
1.0 out of 5 stars
Leider eine billige Kopie, bitte nicht bestellen.
Reviewed in Germany on April 21, 2018Verified Purchase
Meine Renzension bezieht sich ausschließlich auf das erhaltene Exemplar. Ich habe direkt bei Amazon bestellt (Verkauf & Versand durch Amazon), kein Marketplace.
Wie bereits von anderen Personen festgestellt, habe auch ich leider eine billige Kopie des Originals erhalten - vermutlich ein Druck der PDF-Version. Der Druck ist schlecht, das Format ist unnötigerweise sehr viel größer, das Cover ist verschwommen/verpixelt, kein bzw. weißer Buchrücken und -rückseite.
Hierfür über 29€ zu verlangen grenzt an Betrug. Ich habe das Exemplar unmittelbar zurückgeschickt. Schade.
Wie bereits von anderen Personen festgestellt, habe auch ich leider eine billige Kopie des Originals erhalten - vermutlich ein Druck der PDF-Version. Der Druck ist schlecht, das Format ist unnötigerweise sehr viel größer, das Cover ist verschwommen/verpixelt, kein bzw. weißer Buchrücken und -rückseite.
Hierfür über 29€ zu verlangen grenzt an Betrug. Ich habe das Exemplar unmittelbar zurückgeschickt. Schade.

1.0 out of 5 stars
Leider eine billige Kopie, bitte nicht bestellen.
Reviewed in Germany on April 21, 2018
Meine Renzension bezieht sich ausschließlich auf das erhaltene Exemplar. Ich habe direkt bei Amazon bestellt (Verkauf & Versand durch Amazon), kein Marketplace.Reviewed in Germany on April 21, 2018
Wie bereits von anderen Personen festgestellt, habe auch ich leider eine billige Kopie des Originals erhalten - vermutlich ein Druck der PDF-Version. Der Druck ist schlecht, das Format ist unnötigerweise sehr viel größer, das Cover ist verschwommen/verpixelt, kein bzw. weißer Buchrücken und -rückseite.
Hierfür über 29€ zu verlangen grenzt an Betrug. Ich habe das Exemplar unmittelbar zurückgeschickt. Schade.
Images in this review



randomboy93
4.0 out of 5 stars
This is a good book for beginner developers
Reviewed in the United Kingdom on February 8, 2018Verified Purchase
This is a good book for beginner developers, or for whom who just want to review and refresh all the principles of the clean code. If you are an experienced programmer, I am sure that sometimes you will find this book obvious, and sometimes very illustrative.
Before reading this book, I recommend having a good understanding of Java and Object-Oriented programming. Don't forget Abstract classes, Interfaces, and Polymorphism.
In my opinion, it has more than 100 pages in excess.The appendixes and the chapter 14 (Refinement) don't contribute to anything. They are just boring. Also, I think that chapter 13 (Systems) could seem a little bit complex for beginners. It needs a very specific knowledge of Java, with concepts like EJB, JNDI, Proxies, and so on.
On the other hand, every concept is explained accurately with lots of examples. In addition, the "Smells and Heuristics" chapter summarizes the essence of this book very well.
Before reading this book, I recommend having a good understanding of Java and Object-Oriented programming. Don't forget Abstract classes, Interfaces, and Polymorphism.
In my opinion, it has more than 100 pages in excess.The appendixes and the chapter 14 (Refinement) don't contribute to anything. They are just boring. Also, I think that chapter 13 (Systems) could seem a little bit complex for beginners. It needs a very specific knowledge of Java, with concepts like EJB, JNDI, Proxies, and so on.
On the other hand, every concept is explained accurately with lots of examples. In addition, the "Smells and Heuristics" chapter summarizes the essence of this book very well.
15 people found this helpful
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