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Clean Code: A Handbook of Agile Software Craftsmanship Clean Code: A Handbook of Agile Software Craftsmanship by Robert C. Martin
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Clean Code Quotes Showing 1-30 of 125
“Truth can only be found in one place: the code.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Indeed, the ratio of time spent reading versus writing is well over 10 to 1. We are constantly reading old code as part of the effort to write new code. ...[Therefore,] making it easy to read makes it easier to write.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“It is not enough for code to work.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“So if you want to go fast, if you want to get done quickly, if you want your code to be easy to write, make it easy to read.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“A long descriptive name is better than a short enigmatic name. A long descriptive name is better than a long descriptive comment.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“You should name a variable using the same care with which you name a first-born child.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Clean code is not written by following a set of rules. You don’t become a software craftsman by learning a list of heuristics. Professionalism and craftsmanship come from values that drive disciplines.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Of course bad code can be cleaned up. But it’s very expensive.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“It is not the language that makes programs appear simple. It is the programmer that make the language appear simple!”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Redundant comments are just places to collect lies and misinformation.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“You are reading this book for two reasons. First, you are a programmer. Second, you want to be a better programmer. Good. We need better programmers.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Clean code always looks like it was written by someone who cares.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“There are two parts to learning craftsmanship: knowledge and work. You must gain the knowledge of principles, patterns, practices, and heuristics that a craftsman knows, and you must also grind that knowledge into your fingers, eyes, and gut by working hard and
practicing.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“One difference between a smart programmer and a professional programmer is that
the professional understands that clarity is king. Professionals use their powers for good and write code that others can understand.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Perhaps you thought that “getting it working” was the first order of business for a professional developer. I hope by now, however, that this book has disabused you of that idea. The functionality that you create today has a good chance of changing in the next release, but the readability of your code will have a profound effect on all the changes that will ever be made.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Programmers must avoid leaving false clues that obscure the meaning of code.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“The proper use of comments is to compensate for our failure to express ourself in code. Note that I used the word failure. I meant it. Comments are always failures.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Clean code is simple and direct. Clean code reads like well-written prose. Clean code never obscures the designer’s intent but rather is full of crisp abstractions and straightforward lines of control.
- Grady Booch author of Object
Oriented Analysis and Design with
Applications”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Writing clean code is what you must do in order to call yourself a professional. There is no reasonable excuse for doing anything less than your best.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Don’t Use a Comment When You Can Use a Function or a Variable”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“SRP is one of the more important concept in OO design. It’s also one of the simpler concepts to understand and adhere to. Yet oddly, SRP is often the most abused class design principle.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“When you see commented-out code, delete it!”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“If the discipline of requirements specification has taught us anything, it is that well-specified requirements are as formal as code and can act as executable tests of that code!”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Code, without tests, is not clean. No matter how elegant it is, no matter how readable and accessible, if it hath not tests, it be unclean. Dave”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“The problem isn’t the simplicity of the code but the implicity of the code (to coin a phrase): the degree to which the context is not explicit in the code itself.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Every system is built from a domain-specific language designed by the programmers to describe that system. Functions are the verbs of that language, and classes are the nouns.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Honesty in small things is not a small thing.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“It is a myth that we can get systems “right the first time.” Instead, we should implement only today’s stories, then refactor and expand the system to implement new stories tomorrow. This is the essence of iterative and incremental agility. Test-driven development, refactoring, and the clean code they produce make this work at the code level.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“Error handling is important, but if it obscures logic, it’s wrong.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship
“if I must encode either the interface or the implementation, I choose the implementation. Calling it ShapeFactoryImp, or even the hideous CShapeFactory, is preferable to encoding the interface.”
Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship

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