this post was submitted on 28 Sep 2024
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Asking as a newbie programmer: how do you suggest we write comments that explain the 'why' part of the code? I understand writing comments explaining the 'what' part makes them redundant, but I feel like writing it the former way isn't adding much help either. I mean, if I created code for a clock, is writing "It helps tell what time it is" better than writing "It is a clock" ?
It would really help if someone could give a code snippet that clearly demonstrates how commenting the 'correct' way is clearly better than the way we are used to.
“Why” comments make more sense as application complexity grows.
You also have to consider interaction of the code with other external systems - sometimes external APIs force you to write code in ways you might not otherwise and it’s good to leave a trail for others on your team (and your future self…) about what was going on there.
100%. I also like to leave comments on bug fixes. Generally the more difficult the fix was to find, the longer the comment. On a couple gnarly ones we have multiple paragraphs of explanation for a single line of code.