[Caml-list] Re: module managing question

["Michaël Grünewald" <michael-grunewald@wanadoo.fr>]

Vincent Barichard <barichar@info.univ-angers.fr> writes:

> Hi,
> 
> I have a question on the manage of modules files. I use the toplevel
> system to make some algorithms and then I compile them to get efficient
> executable file.
> Is it possible to have exactly the same files for the two stage. For
> example, in the ocaml toplevel, I load the two following files a.ml and
> b.ml with the #use command.
> 
> In a file named a.ml, I have :
> module A = struct
> 	let f = function _ -> 0
> end
> 
> In a second file named b.ml, I have :
> module B = struct
> 	open A
> 
> 	let g = f
> end
> 
> Everything works well.
> But when I want to compile them, I have to put in comments the "(*module ?
> = struct*)" and the "(* end *)" to make it works.
> Is there another way to proceed ?

In the toplevel loop you can type `#load "a.cmo";;' after you compiled a,
it will load the compilation unit so-named, and make available the module
'A'. The name is because 'A' is the Capitalisation of the basename for
`a.cmo' not because of you said `module A = struct ... end' in the file
`a.ml'. The full qualified name for the `f' function is `A.A.f' 

Yous should take a look at the chapers about `modules, the `ocamlc' and
`ocamlmktop' tools, and the chapter `modules and the filesystem' in the
books `The objective caml system - <ver>' and the `Développement
d'apllications avec Objective Caml'that are both available online from the
caml.inria website.

-- 
Michaël Grünewald <michael-grunewald@wanadoo.fr>  - RSA PGP Key ID: 0x20D90C12
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