- code is debt (and bad code is an unhedged call option)
- our users dont care about the code
- every line of code has costs (your time, readability, maintainability, complexity)
- its like owning a house with lots of rooms. its nice when your friends come over once a month, but you pay rent every day
- dont add features unless you’re sure it is necessary
- dont optimize prematurely
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DRY DRY DRY
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be consistent
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be predictable (aka no magic)
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no magic numbers/strings — use constants instead
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a good repro is 90% of a bugfix
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code is written once, but is read many times
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ship early, ship often
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first code, then ship, then measure, then optimize
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remember the 80/20 rule, and the 90/90 rule
- first you don’t know the rules, then you learn the rules, then you break the rules
See also: https://en.wikipedia.org/wiki/Category:Programming_principles
Originally posted here