[kevindamm]

have you tried Rosetta Code?

https://rosettacode.org/wiki/Rosetta_Code

Not a guide, per se, but it has many implementations of a wide variety of math and programming concepts, implemented in a large number of different programming languages.

[awongh]

This is cool. It's pretty close to what I meant, but each task is completely siloed without any meta information, so it's good if you wanted to look for something very specific but not good if you are thinking about or exploring a problem space.... For example, on the page for factorial it might be nice if they linked to other kinds of combinatorial problems.

Although I bet that ChatGPT might already know a lot of this kind of thing. I haven't had the chance to use LLMs in this specific context yet.