Is writing a guide instead of a question allowed?

I came across this post:

Guide: How to store objects in a Hive database in Flutter

This post doesn't pose a question but rather instead, provides a guide on how to accomplish a specific task.

From what I understand, Stack Overflow is a Q&A site, and not intended for the above-styled posts.

On the other hand, I did come across a few posts for canonicals such as:

I'm getting a TypeError. How do I fix it?

which seems to be allowed.

So, Are writing guides as a post allowed?