I have heard a lot of people mention Code Complete as a book worthwhile reading. Unfortunately, I am so busy that I don't have time to read it, so can anyone tell me what the key points of the book are?
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Code Complete is about software craftsmanship; it is an advanced-beginner/intermediate-level book, written for the working programmer, but it would still be very useful to someone who's been programming for at least a year.
Thus the key points of Code Complete (2nd ed.) are nicely summarized in its Chapter 34, Themes in Software Craftsmanship. As paraphrased from my notes:
But the most important take-aways are in Chapter 33, Personal Character: once you consciously seek to improve as a coder, you can and will. The fastest way to do so is to take on the the attitudes of master coders (humility, curiosity, intellectual honesty, discipline, creativity), while also practicing their habits (many good habits are listed in the book, e.g. choosing good variable/value names).
Also, the book makes clear that the gap between average and excellent in software is immense; that fact alone should drive the conscientious coder to better himself.
That's the short of it; the long version is in the book. :) I can also send you my not-so-long, not-so-short notes if you want more details. But the book is certainly money and time well-spent, even if the writing style is tiresome at times.
Beyond Code Complete, I'd highly recommend The Pragmatic Programmer. It's for intermediate-level programmers, nicely-written and a great mix of high, medium, and low-level advice.
It's an intermediate book, a potpourri of software development best practices.
If you're a beginning programmer you won't understand a lot of the material, and if you are experienced, the book will only confirm what you already know. Consequently, the book might be of most value to intermediate programmers, who already have a bit of programming knowledge, but need a book of best practices to tie it all together.
Several pages are spent on how to format code blocks, and the relative merits of each approach. Personally, I think the great debate on where to put your curly braces is over. (or is it?)