Ah yes, the "functional" and "object oriented" Javascript, how I love thee. When you are starting out, convenience and familiarity (which are visceral) can tru

Ah yes, the "functional" and "object oriented" Javascript, how I love thee. When you are starting out, convenience and familiarity (which are visceral) can trump abstract notions like "pure", "correct", "reason-able". I'm not saying your opinion is worthless, just that your judgement could be coloured by inexperience. My sincere recommendation is to use "Real World OCaml" - https://realworldocaml.org/ https://realworldocaml.org/ as a reference to learn OCaml instead of old and busted tutorials littering the internet. Trust me, I have been trying to learn OCaml "on the side" for a few years and RWO is the first book that I have absolute love (even accounting for a wide variety of PL books I read) for being practical, current and explaining stuff.