Re: [Caml-list] [ANN] OCamlOScope: a new OCaml API search

[Jun Furuse <jun.furuse@gmail.com>]

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Hi Yaron,

I have just updated it so that it expands manifest types. It is a dirty
hack but "split : string -> char -> string list" lists up
Core.Std.String.Escaping.split.

There are still lots of things to do before it becomes as powerful as
Hoogle is, but so far, I am working on its speed and size rather than
search quality.

Jun


On Fri, Jul 5, 2013 at 11:25 AM, Yaron Minsky <yminsky@janestreet.com>wrote:

> Neat!
>
> I played with it for a bit, and the main issue it saw with it is the
> trickiness around type names for things like string.  For example, to find
> core or batteries' string split function, you need to search for
>
> t -> char -> t list
>
> Rather than
>
> string -> char -> string list
>
> Which finds ocplib's equivalent, and the Core.Std.String.Escaping version
> as well.
>
> Fill on unification doesn't seem ideal, but I wonder if some ability to
> recognize equivalent type names can be done without full-on search time
> unification.
> On Jul 5, 2013 5:12 AM, "Jun Furuse" <jun.furuse@gmail.com> wrote:
>
>> Hi list,
>>
>> I have launched a new OCaml API search, OCaml◎Scope at
>> http://ocamloscope.herokuapp.com .
>>
>> OCaml◎Scope is a type directed library search, derived work from OCaml
>> API Search by Mizuno and its ancestor OCamlBrowser by Garrigue. It is also
>> inspired from Hoogle, the same API search engine for Haskell by MItchell,
>> which I regularly use in my Haskell :-) job.
>>
>> * Fast and Portable. It loads everything in memory, unlike OCaml API
>> Search and OCamlBrowser which load compiled interface files (*.cmi)
>> dynamically. The data file is extracted from compiled files but
>> self-contained, so the search engine does not require to compile the
>> libraries locally.
>> * No use of unification but edit distance of types like Hoogle.
>> Unification does not provide good results in type directed search, and is
>> costy.
>> * OCamlFind and OPAM friendly. OCaml◎Scope knows which items are from
>> which OCamlFind and OPAM packages.
>> * OCamlDoc: it also extracts OCamlDoc comments, if possible.
>> * Small: it can even run as a heroku app. Currently it carries 245k
>> entries from 76 OCamlFind packages including Core and Batteries, but the
>> data file (as a marshalled OCaml value) is still 20Mb.
>>
>> There are lots of todos but I think the search results look well sane so
>> far. If you find something strange please drop by
>> https://bitbucket.org/camlspotter/ocamloscope-server/issues?status=new&status=open and
>> leave some comments. Thanks!
>>
>> Jun Furuse
>>
>>

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