printing issue

[cedricvanrompay]

I think there is a problem with printing.
Here is what I got:

# print_int 3;;
- : unit = <unknown constructor>
# print_string "Hello";;
- : unit = <unknown constructor>
# print_string "x = ";;
- : unit = <unknown constructor>
# ;
File "", line 1, characters 21-22:
Error: Syntax error
# print_string "x = "; print_int !x; print_newline ();;
- : unit = ()
# Printf.printf "x = %d. Bye %s\n" !x "John";;
- : unit = ()
# Printf.printf "Bye %s\n" "John";;
- : unit = ()

[sfcgeorge]

Yep I get that too. And a lot of the tutorial involves printing so it's kinda useless when all you see is - : unit = ().

[Daniel-Hug]

I found out you have to open the browser's console to see the printed values. In chrome that's f12 (open devtools), then ESC (open console drawer). This is not obvious at all from the tutorial though. :(

[pthedinger]

It's probably worth noting that in Chrome I'm seeing that
print_int 3
doesn't come out to the console straight away either - it is buffered. So you have to wait until there is a newline to be able to see it. Just having the console open won't be enough

[markbao]

+1, still not fixed as of today

[hhugo]

#146

[markbao]

@hhugo Nice, thanks. Does that mean that someone just needs to make a PR to update the js-of-ocaml dependency? I would help but I'm not very familiar with this.

[hhugo]

I never managed to build tryocaml myself #135.
The compilation process was non standard and rely on compiler patches (https://github.com/OCamlPro/tryocaml/tree/master/toplevellib) with no support for latest version of ocaml.
The situation may have change, but I don't see anything recent in the commit history.
Also, the website is using a 2 years old version of js_of_ocaml.

An up to date ocaml toplevel is available here :
http://ocsigen.org/js_of_ocaml/dev/files/toplevel/index.html

[cagdasbozman]

We actually are working on a new interface which will be online soon.

[luiscruz]

+1

[zzz6519003]

@Daniel-Hug thx!

[ericjmorey]

Problem persists:
#146 (comment)