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The Grand Unified Theory of Documentation (AKA: Your project needs all 4 types or you have bad documentation)
(documentation.divio.com)
this post was submitted on 21 Jun 2023
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Programming
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What does this mean?
Well, you're looking at a method, and imagine two things.
The first is a link to a confluence article. You click on it. Nothing loads. Ah, right. Activate the VPN. Click the link again. You have no access. So you send your IT a ticket to gain access. One week later you get a mail you have access know. For what? Who'd remember last week?
Alternatively, there's an inline comment, or a markdown file in the same repo so you click on it and your IDE opens it. And then you modify the piece of code and you realize you still have that markdown file still open, so you adjust a few things and also note down a weird quirk you found during debugging.
However, in the first case.. well, you finally had access to the documentation, so you want to modify it to bring it up to date. Well, guess what. You have read access. So back to another ticket with IT that you're actually working on this and you'd like to update the documentation. After a week, you're notified: Well they need approval of the documentation owner for you to get write access. They are on vacation. When they get back after 2 weeks, they approve the request, and it goes into a second round of approvai with your teamlead. And guess what? Right, he's not in for the next 2 weeks. By the time you finally have write access, you're not working in that department anymore. And no, that other department doesn't use that confluence.
Overall, documentation tends to be somewhat of a chore for many people. If it's close - it's in the same repo, you can open the file in your IDE, you can commit updated documentation with your code in the same PR - there's a slightly higher chance for folks to update documentation. If you put in the hellscape of a process some companies have for their tooling there, no one will ever touch the documentation.
I assume with "close" they meant that documentation should be located right there at the code it is documenting. Think Java doc comments (heredoc) or how in Golang you put comments above a function definition which is then automatically turned into documentation.
If documentation is located in an entirely different file, it's easy to modify code and forget to update the corresponding documentation.