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From: Robert Dewar <robert_dewar@my-deja.com>
Subject: Re: friend classes in ada95
Date: 2000/04/20
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In article <38FE365D.31C893A6@acm.org>,
  jrcarter@acm.org wrote:

> Wirth, in accepting OO for Oberon, said that it's simply ADTs
> under another name.

If that's accurately stated, he is missing something!

> When I first looked into OO about 1984, once I finally
> understood what was going on, I didn't find anything new,
> except that the mechanism use made the code less readable than
> if composition had been used.

Well seeing as it is Simula-*67* you would hardly expect to
find anything new in 1984!

> I suspected that the OO people made up new terms for well
> establishe concepts such as type (class) and subprogram
> (methods) to mask this lack of original content.

Then you are missing something too.

The object oriented programming paradigm, involving objects
with state, with a message passing discipline between objects,
is a valuable one with many applications (although trying to
bend it to all applications is unfortunate).

I know these two positions well:

   All abstract data types are objects, and anything I do with
   ADT's is OO programming.

   There is no such thing as OO, it's all hype.

But neither of these is a helpful illuminating position!


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