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this post was submitted on 10 Aug 2024
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Programming
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It's not nitpicking, stuff like this is far more impactful than choosing between 5 lines vs 10 lines long methods, or whether the
hasExtraCommissions"if" belongs inside or outside ofcalculateExtraCommissions. This kind of thing should immediately jump out at you as a red flag when you're reading code, it's not something to handwave away as a detail.I never claimed it's not important, I'm just saying it's not relevant here, as there is no context to where this method was put in the code.
As I said, it might be top-level. You have to mutate state somewhere, because that's what applications ultimately do. You just don't want state mutations everywhere, because that makes bad code.
The whole book is like this, though, and these are specifically supposed to be examples of "good" code. The rewritten time class toward the end, a fully rewritten Java module, is a nightmare by the time Martin finishes with it. And I'm pretty sure it has a bug, though I couldn't be bothered to type the whole thing into an editor to test it myself.