"strings are arrays of bytes" combined with the assumption that "characters are a single byte" sounds basically the same as the "array of code points" that the parent comment is disagreeing with
Sure, but if you're insisting that the string be represented as one byte per character, you end up with the exact same properties with "array of code points" and "array of bytes"
No, it's impossible to do random access to retrieve a character, if you are dealing with code points, because code points do not have a fixed byte size. I thought this a good intro <https://tonsky.me/blog/unicode/>.
