How to load core in the toplevel?

[Yaron Minsky]

And even if you want to pick and choose what you want to use, you
should get things from the Std namespace.  i.e., you should grab
things from Async.Std rather than from Async_extra.  It would be
reasonable to do:

module Core = Core.Std
module Async = Async.Std

and just qualify things by "Core" and "Async" when you wanted them.

That said, I do think the Core.Std overlay is quite pleasant.

y

On Thu, Nov 8, 2012 at 11:06 AM, Ashish Agarwal <agarwal1975 at gmail.com> wrote:
>> I'm very worried about the open directives
>
> Your concern is generally correct, but not always. If you are using Jane
> Street Core, the implication is that you've chosen this as your standard
> library, and doing open Core.Std is the way to use it.
>
>
> On 7 Nov 2012, at 05:33, Francois Berenger <francois.ber... at gmail.com>
> 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... at 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.
>>>>>>>>
>>>>>>
>>>>
>>>
>