Ruby translation

wow, I never thought of using spaceship operator. Nicely done

Yep, it doesn't matter what is in between the first and last index. Lol, I really overcomplicated my solution.

What's this, I wonder???

Approved, thank you

Ruby translation

adding int to a string directly for a pythonic guy was quite interesting

Took a bit of time to understand. Feels a bit magical that you can do it like this!

this make 100 not a valid number, right?

ruby returns last evaulated expression.
you will use return if you want to get out early
from a method.

I am starting to understand why this works. But starting from Euler's, how did you get here? And why is it that we don't have to check if i is prime?

Clever, but I would definitely not call this a best practice.

This is clever but I wouldn't say it's the best practice.
That is because it's relatively harder to understand at first glance (when compared to some other solutions).

That was the case for me to say the least.