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Can any one suggest what is the best way to write good code that is understandable without a single line of comments?
1000
It's possible to write code without comments, as long as you know when and where they're actually needed.
Commenting involves placing Human Readable Descriptions inside of computer programs detailing what the Code is doing. Proper use of commenting can make code maintenance much easier, as well as helping make finding bugs faster. Further, commenting is very important when writing functions that other people will use.
Ideally, our code should be self-explanatory and we wouldn't even need any comments. However, sometimes it's not possible to express something purely using code.
I once had a professor when I was in college tell me that any good code should never need any comments.
Her approach was a combination of very precise logic split out into small functions with very descriptive method/property/variable names. The majority of what she presented was, in fact, extremely readable with no comments. I try to do the same with everything I write...
175
Read Code Complete, 2nd Edition cover to cover. Perhaps twice.
To give some specifics:
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