Commented-out code may sometimes - very rarely - have value, but usually as a warning not to do something. Like in a function document string, something saying "this used to be done like so, but there's a gotcha, so don't refactor it back".
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Commented-out code may sometimes - very rarely - have value, but usually as a warning not to do something. Like in a function document string, something saying "this used to be done like so, but there's a gotcha, so don't refactor it back".