This is great for ASCII but rust uses utf8. Your function will probably break spectacularly when you feed it Unicode.

Wow, I would never have thought of approaching it like this. Learned something new here, thank you!

While writing the code I was expalining it to a friend he asked questions I then answered with the comments.
In retrospect, it is a bit too much, you are right. I need to learn how synthesize my thoughts better.

Either way, thank you very much for your feedback, and for reading my code.

I can appreciate effective commenting, but this is perhaps too much for the effect of such a function.