Definitely, control structures are a debate that is faaar from over and also highly specific to each language. I've put here general observations but far from me to be definitive on that specific matter. It's more guiding ideas.
Regarding the variable re-assignation, I do it as little as possible. But sometimes in JS with block-scoping you need to use a let here and there to assign a value from inside a condition. Also there is the case of counters for loop iterations. If we were to make a rule like that it would require a lot of fiddling I think.
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Definitely, control structures are a debate that is faaar from over and also highly specific to each language. I've put here general observations but far from me to be definitive on that specific matter. It's more guiding ideas.
Regarding the variable re-assignation, I do it as little as possible. But sometimes in JS with block-scoping you need to use a
lethere and there to assign a value from inside a condition. Also there is the case of counters for loop iterations. If we were to make a rule like that it would require a lot of fiddling I think.