I have to interject here for the sake of those unfamiliar with OCaml and who may take the parent comment at face value.

Saying "it has quirks like using ;; to end statements" is misleading to the point of just being bogus. The double semi-colon is only ever used in the REPL. In fact, I've been programming OCaml for fun and professionally for over 15 years, and I've never used a double semi-colon in my code, nor have I ever encountered one in the "wild".

Thanks for clarifying

> worst of all are the optional parenthesis in function calls

??

    > let r = some_function x y z in ...

There are no parentheses here, and it's not optional. What you probably are missing is that if `some_function` takes 3 arguments, then `some_function x y` is a function value that takes 1 parameter (currying).

Btw, iirc, SML doesn't have this: there you only have 1 parameter but it could be a tuple

> Btw, iirc, SML doesn't have this: there you only have 1 parameter but it could be a tuple

Nah, SML does also support automatically curried function definitions, it's just that by convention that feature didn't get used as often. I tried to find out why that was the case a while ago, and stumbled on this explanation: https://www.reddit.com/r/ProgrammingLanguages/comments/jde9x...

> Note how OCaml is flexible about whether you write the parentheses or not, and whether you write whitespace or not.

from here https://cs3110.github.io/textbook/chapters/basics/toplevel.h...

isn't that the case in most programming languages ? In essence, if you have an expression exp then (exp) is also an expression. So nothing special about OCaml in that regard. [note, just checked python, php, and js and it is the case]

Ok so maybe the example is confusing, because it seemed it was talking about function calls (where they are mandatory in the languages you mentioned)