I've had to maintain people's sloppy code in the past, and it is very
expensive, both in terms of the time I spend on it, and the frustration
levels I reach trying to understand it and modify it without introducing
new bugs. I've also maintained well-written code, and the difference is
approximately one order of magnitude in effort. That is to say, it is 10
times more expensive in my experience to fix bugs and add features in
code that is sloppily written and poorly documented.
I agree 100%. I have had the wonderful opportunity to add features to and
debug other people's poorly written code. It is a chore to say the least.
I live by the rule that I first learned in a beginning CS class and have had
validated hundreds of times since:
1. make your code work
2. make it pretty (this includes making it readable, maintainable and well
commented)
-Rusty
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