[Caml-list] use of ";;" when teaching Ocaml

[Alan Schmitt <alan.schmitt@polytechnique.org>]

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Hello,

In my Ocaml class, I tend to promote the use of ";;" to separate phrases
(I'm basically following
http://ocaml.org/learn/tutorials/structure_of_ocaml_programs.html#Usingandomittingand
although I was not aware of this page when I created the course). My
motivation is to minimize the difference between using the top-level and
writing files.

I am now wondering if this is a good practice. In a nutshell, would you
rather use

#+begin_src ocaml
let x = 12;;
print_endline "Hello World!"
#+end_src

or

#+begin_src ocaml
let x = 12
let () = print_endline "Hello World!"
#+end_src

when teaching Ocaml?

Thanks,

Alan

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