Output functions not working

[let-def]

See:

# print_int 4;;
- : unit = <unknown constructor>
# print_string "hello";;
- : unit = <unknown constructor>

Same with Format.fprintf

[hhugo]

It outputs on the console

[let-def]

No it is not (tested on firefox 31 & firefox 29, varisou GNU/Linux).
And printing as <unknown constructor> is incorrect.

Maybe try-ocaml redefine some I/O functions and the API was changed somehow, in any case it is not working.

[hhugo]

You need to flush in order to see it.
print_int 4;flush_all()
<unknown constructor> is because some JavaScript primitives return undefined instead of 0. I'm fixing some of those in js_of_ocaml

[let-def]

Ok. That's confusing for beginners, thanks for fixing that.

[lcdunstan]

It's confusing, because the tutorial says nothing about the Javascript console

[hhugo]

<unknown constructor> issue is fixed in latest js_of_ocaml toplevel http://ocsigen.github.io/js_of_ocaml/

[yadavankur]

Still an issue in Chrome Version 57.0.2987.133 (64-bit). Here is what I see:

# print_int 4;;
- : unit = <unknown constructor>

# print_int 4;flush_all();;
- : unit = ()

[cagdasbozman]

@yadavankur did you check your javascript console ? We are working on a new website, maybe it will be less confusing to use https://try.ocamlpro.com/fun-demo/tryocaml_index.html

[yadavankur]

Ok, I misunderstood the previous conversation. Yes, the console displays the data. Also, the new website does not have these issues.

[xranom]

Looks like this is still an issue?

print_int 3;;

• : unit =

[ericjmorey]

Using Firefox 68.0 on Lubuntu 18.04 LTS I get the following results: https://pastebin.com/VZD1Sfb8

Problem seems to persist.

[hhugo]

What website have you tried ?
https://try.ocamlpro.com has not been updated after the issue was first filled.

Try https://try.ocamlpro.com/fun-demo/tryocaml_index.html instead

[hhugo]

@AltGr, I believe this can be closed.