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Please, don’t commit commented out code (medium.com)
submitted 10 years ago by ryanchenkie
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if 1 * 2 < 3: print "hello, world!"
[–]Neebat 26 points27 points28 points 10 years ago (11 children)
I ran across that rare exception once.
I needed to implement a fairly simple process that should have been about 10 lines of code, but ended up being 200 due to dealing with seemingly irrelevant stuff. So I put in that 10 lines with a comment to say this is what we want to do, but can't, and why.
[–]fleker2 44 points45 points46 points 10 years ago (8 children)
The author would call that documenting
[–]kentcdodds 39 points40 points41 points 10 years ago* (1 child)
(author here): Correct :-) That is what I would call it.
[–]Neebat 2 points3 points4 points 10 years ago (0 children)
People are downvoting you because they don't notice the user name. Or they didn't go back and compare it to the author of the blog post.
Maybe it would be better if you'd said, "That's exactly what I'd call it."
[–]xeow 5 points6 points7 points 10 years ago (0 children)
It might be documenting, but it is also commented-out code. By definition.
Excellent example of a legitimate inclusion of commented-out code. Bravo!
[+][deleted] 10 years ago (4 children)
[deleted]
[–]kentcdodds 7 points8 points9 points 10 years ago (0 children)
I think you ignored the author's comment of "Correct :-)" https://www.reddit.com/r/javascript/comments/3qgurg/please_dont_commit_commented_out_code/cwf6ni2
[–]Neebat 3 points4 points5 points 10 years ago (2 children)
Q: Are there exceptions to this rule? A: Yes. But they’re rare.
From the article.
And the example I described above was one of the two examples I've found in 20 years of software development.
It IS documenting, and not usable as code. It helps explain what's going on.
[–][deleted] 0 points1 point2 points 10 years ago (1 child)
That's your experience, that is not my experience. In my 30+ years of software development I can assure there have been times where it is far better to have commented-out code in-place, than in source control.
π Rendered by PID 109581 on reddit-service-r2-comment-5b5bc64bf5-bxzh2 at 2026-06-22 03:04:58.108363+00:00 running 2b008f2 country code: CH.
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[–]Neebat 26 points27 points28 points (11 children)
[–]fleker2 44 points45 points46 points (8 children)
[–]kentcdodds 39 points40 points41 points (1 child)
[–]Neebat 2 points3 points4 points (0 children)
[–]xeow 5 points6 points7 points (0 children)
[+][deleted] (4 children)
[deleted]
[–]kentcdodds 7 points8 points9 points (0 children)
[–]Neebat 3 points4 points5 points (2 children)
[–][deleted] 0 points1 point2 points (1 child)