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[Caml-list] Newbie: Separate compilation of interfaces, modules
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Date: -- (:)
From: andrew cooke <andrew@a...>
Subject: To beginners list Re: [Caml-list] Newbie: Separate compilation of interfaces, modules

Ah, sorry - I've just seen the pointer to the beginners list.  Will repost
this question there (but not the one on polymorphic variants).

Cheers,
Andrew

andrew cooke said:
>
> Hi,
>
> I can't work out how to structure the following in files (there are
> examples in the documentation, but all seem to be for interactive work).
> I don't know if the problem is conceptual (not understanding modules,
> signatures etc) or practical (don't know what to type).
>
> I have an interface, PersistentArray, that I define in PersistentArray.mli
>
> Then I have an implementation, BinaryTreeArray, that I code in
> BinaryTree.ml
>
> But where do I put the information that BinaryTreeArray implements
> PersistentArray?  What should go in BinaryTreeArray.mli so that I can use
> it as a particular implementation of PersistentArray?
>
> The idea is that later I can define some other implementation, say
> TrieArray, that can be used as the PersistentArray implementation without
> changing any more code than is necessary (preferably just one line
> somewhere).
>
> Thanks,
> Andrew
>
> --
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-- 
  __ _ __ ___  ___| |_____   work web site: http://www.ctio.noao.edu/~andrew
 / _` / _/ _ \/ _ \ / / -_)  personal web site: http://www.acooke.org/andrew
 \__,_\__\___/\___/_\_\___|  personal gallery: http://www.acooke.org/pancito

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