Re: [Caml-list] Error: Unbound value abs_num

[Jean-Marc Alliot <jean-marc.alliot@irit.fr>]

Basic mistake :-)

Loading is not the same as opening.

You can either do (after #load):
# open Num;;
# abs_num;;
- : Num.num -> Num.num = <fun>

Or qualify the function with th module name:
# Num.abs_num;;
- : Num.num -> Num.num = <fun>

And then don't forget abs_num needs a Num as an argument (and returns a Num)
# abs_num (Num.Int 4);;
- : Num.num = Int 4

And it's Num.Int and not Num.int (it is a constructor, not a function).



Le 21/07/2013 12:47, zech.ph@gmail.com a écrit :
> Hi,
>
> I'm new to OCaml and already struggling around with the seemingly easiest
> things.
> Following some introductory texts I wanted to play around a little with the
> toplevel and its various features, among others, using provided modules. For
> this, I thought about loading nums.cma and try some of its defined functions,
> but it just does not work. See below for what I do in the toplevel and the
> respective output.
>
>> ocaml
>          OCaml version 4.00.1
> # #load "nums.cma";;
> # abs_num 4;;
> Error: Unbound value abs_num
> # abs 4;;
> - : int = 4
>
> >From my point it looks like I do not miss anything, yet, I just can't call
> abs_num. And I don't know why. I'm working on a Fedora 19 x64. I checked
> Bugzilla, but couldn't find any Fedora related issues (at least for this
> behavior).
>
> Thanks for any help,
>
> Phil
>
> PS: I know about the beginner's list at yahoo, however, I chose this one as I
> don't like their style of forced social integration using different
> services...I hope this is ok...
>