Re: [Ocaml-lib-devel] Module Structure

[fva <fv...@ts...>]

Nicolas Cannasse wrote:

>Hi list,
>
>I have been thinking for some time on the module structure for ExtLib
>issues, and I think I found a quite reasonable comprise.
>Ok, first of all, we we talk there only about modules which are extending
>the StdLib ones, other "new" modules doesn't cause any problems.
>But for the Stdlib one - let's take the example of ExtList - there is some
>problems :
>
>- some people would like to use ExtList as a replacement of List
>
>For this first category of people, we can do the following :
>
>-- file extList.mli ---
>module List : sig ... end
>--- eof ---
>
>Like this theses people will only have to add an extra "open ExtList" in the
>beginning of their files and then they can use the List standard functions
>as well as the List extended ones within the same short and readable
>namespace : List.
>
>But !
>- this we're modifying the specification of some functions, people with
>existing running code would like to use only ExtList as an additionnal
>library of functions, without overriding the current Stdlib ones.
>
>Here's the answer :
>--- file extLib.mli ---
>module ExtList = ExtList.List
>--- eof ---
>
>So they only have to do an "open ExtLib" and then they can use extended
>functions under the ExtList namespace.
>
>Nicolas Cannasse
>
How was that going...?

Vote +1 for this proposal...

Regards,

       Fran