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[Caml-list] Delegation based OO
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Date: -- (:)
From: Yamagata Yoriyuki <yoriyuki@m...>
Subject: Re: [Caml-list] Delegation based OO
From: Alex Baretta <>
Subject: [Caml-list] Delegation based OO
Date: Mon, 22 Mar 2004 11:18:05 +0100

> This is really a pain. I would expect delegation to be supported in the 
> coolest OO language under the sun ;)

As far as I know, type theory for object-based OO is still
on-going research topic.

In your example,

class *type* does_something = object ... end

class does_more (an_object:#does_something) = object
   delegates an_object

"an_object" may have a method, say, "an_object#foo : int".
"does_more" could overwrite the method, and define "does_more#foo :
float".  Now, what type should "self#pooh" have in the definition of

But you know something I do not aware?

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