How to load core in the toplevel?

[Francois]

On Thursday, November 8, 2012 1:42:41 AM UTC+9, Anil Madhavapeddy wrote:
>
> You should also add "#camlp4o" so that toplevel syntax extensions work too.
>

In the future, I think only the one from janestreet to do automatic
translations to/from s-expressions interests me.
I prefer to read standard OCaml code usually.
 

>
> I'd really recommend using 'utop' (installable via OPAM) instead of the 
> default toplevel. It doesn't require the extra -I that the default toplevel 
> needs, and has a really nice interactive interpreter.
>

I have to read about it.
I'm conservative about using new things (I'm an isolated OCaml developper, 
no one nearby to help me in case
I mess with something, that's why I'm so active on mailing lists).
 

>
> My full .ocamlinit with utop is:
>
> #use "topfind"
> #camlp4o
> #thread
> #require "core.top";;
> #require "async";;
> open Core.Std
> open Async.Std
>

Thanks for sharing this.
I'm very worried about the open directives
and try to never use them so I don't think
it would fit me for the moment.

Best regards,
Francois.



>
> -anil
>
> On 7 Nov 2012, at 05:33, Francois Berenger <francois.ber... at gmail.com<javascript:>> 
> wrote:
>
> Thanks a lot.
>
> So, the whole recipe in my case was:
>
> ocaml -I $OCAML_TOPLEVEL_PATH
> #thread;;
> #require "core.top";;
> #require "async";;
>
> Regards,
> F.
>
> On Wednesday, November 7, 2012 12:09:15 PM UTC+9, Sebastien Mondet wrote:
>>
>>
>>
>> I think that one is the  
>>    #thread;;
>> thing
>>
>>
>>
>>
>> On Tue, Nov 6, 2012 at 10:06 PM, Francois Berenger <
>> francois.ber... at gmail.com> wrote:
>>
>>> Thanks! That fixes the problem partially.
>>>
>>> Now, I get:
>>>
>>> # #require "core.top";;
>>> # #require "core.top";;stem/lib/core/core.cma: loaded
>>> Error: Reference to undefined global `Condition'
>>> # #require "core";;
>>> # #require "core";;m/system/lib/core/core.cma: loaded
>>> Error: Reference to undefined global `Condition'
>>> # #require "async";;
>>> # #require "async";;/system/lib/core/core.cma: loaded
>>> Error: Reference to undefined global `Condition'
>>>
>>> Any hint?
>>>
>>>
>>> On Wednesday, November 7, 2012 11:54:47 AM UTC+9, Sebastien Mondet wrote:
>>>
>>>>
>>>> I'm not sure if this is your problem, but there was something with the 
>>>> toplevel (comming with the system compiler) not knowing about opam 
>>>> packages. 
>>>> I have to launch:
>>>>
>>>>    ocaml -I $OCAML_TOPLEVEL_PATH
>>>>
>>>> (the variable OCAML_TOPLEVEL_PATH is set by eval `opam config -env`)
>>>>
>>>>
>>>> On Tue, Nov 6, 2012 at 9:37 PM, Francois Berenger <francois.ber...@**
>>>> gmail.com> wrote:
>>>>
>>>>> Apparently, ocamlfind knows where these libraries are:
>>>>>
>>>>> $ ocamlfind -query core
>>>>> /home/berenger/.opam/system/**lib/core
>>>>> $ ocamlfind -query async
>>>>> /home/berenger/.opam/system/**lib/async
>>>>> $ ocamlfind -query async_extra
>>>>> /home/berenger/.opam/system/**lib/async_extra
>>>>>
>>>>>
>>>>> On Wednesday, November 7, 2012 11:32:43 AM UTC+9, Francois Berenger 
>>>>> wrote:
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> I'd like to play with core in my toplevel.
>>>>>>
>>>>>> Is there a recipe?
>>>>>>
>>>>>> I have installed everything with OPAM:
>>>>>> $ opam list | egrep "core|async"
>>>>>> async                 108.07.01  Monadic concurrency library
>>>>>> async_core            108.07.01  Monadic concurrency library
>>>>>> async_extra           108.07.01  Monadic concurrency library
>>>>>> async_unix            108.07.01  Monadic concurrency library
>>>>>> core                  108.07.01  Industrial strength alternative to 
>>>>>> OCaml's standard library
>>>>>> core_extended                --  Extra components that are not as 
>>>>>> closely vetted or as stable as Core
>>>>>>
>>>>>> In my toplevel, I type
>>>>>> #use "topfind";;
>>>>>> #list;;
>>>>>>
>>>>>> Nothing about core or async shows up.
>>>>>> While parmap is there, for example.
>>>>>>
>>>>>> Is this normal?
>>>>>>
>>>>>> I guess there is some configuration file of findlib to tweak 
>>>>>> somewhere.
>>>>>>
>>>>>> Regards,
>>>>>> F.
>>>>>>
>>>>>>
>>>>
>>
>
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