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If you are a programmer, you need this book.
You may read code because you have to--to fix it, inspect it, or improve it. You may read code the way an engineer examines a machine--to discover what makes it tick. Or you may read code because you are scavenging--looking for material to reuse.
Code-reading requires its own set of skills, and the ability to determine which technique you use when is crucial. In this indispensable book, Diomidis Spinellis uses more than 600 real-world examples to show you how to identify good (and bad) code: how to read it, what to look for, and how to use this knowledge to improve your own code.
Fact: If you make a habit of reading good code, you will write better code yourself.
Diomidis Spinellis has been developing the concepts presented in this book since 1985, while also writing groundbreaking software applications and working on multimillion-line code bases. Spinellis holds an M.Eng. degree in software engineering and a Ph.D. in computer science from Imperial College London. Currently he is an associate professor in the Department of Management Science and Technology at the Athens University of Economics and Business.
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Some of the advice is fairly basic such as try to realign indentations properly and replace complex code structures with simple placeholders when doing analysis. Although there are parts of the book that are excellent, too many of these good parts are wrapped under what should be basic concepts to anyone reading code. How can you debug a Java program, for example, if you are unfamiliar with abstract classes, libraries, or polymorphism? Do you really need a book on code reading to explain basic object oriented programming?
Overall, the book seems very unfocused and I really can't recommend it.
The only problem is that inexperienced programmers, who would benefit most from this book, are unlikely to pick up a book on how to read C programs unless someone tells them to. Experts will find that they have already learned most of these things from their experience, although they may still enjoy this book for confirming what they know. But I think that experts will also enjoy being able to loan this book to inexperienced programmers to transmit the wisdom distilled from experience.