What are the best practices here? I don't say there are not, I just want to know what they are to lern about best practices

I was doing similar and kept getting erros i guess was cause i was using bacticks to interpolate ``

I am reading about regular expressions now, it starting to make sense. Thanks!

This is the syntax of regular expressions, you have to search about this topic if you don't know it.

em.....Brilliance!

Learning the built in libraries is important, but I feel this solution skirts around the problem. i.e) If the function name in the sort library was InAscOrder instead of IntsAreSorted, then you would call "return sort.InAscOrder(numbers)". Do you see my point? If you think I'm wrong, please let me know the time complexity of your solution.

Elegant.

I like it too

This will add a space before every capital letter regardless of whether it is part of a camelcased word...

This was my feeling too.

All is fair in passing tests, even if the environment is totally unusable afterwards.

Wow, very elegant!

Returning nil from a method which clearly should return either false or true can lead to bugs. E.g. alphanumeric?(s) == false wouldn't work as expected.

Nah, that’s fine. Collateral damage.