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From: amir@iae.nsk.su (Amir Yantimirov)
Newsgroups: comp.lang.ada
Subject: Re: Imitation is the sincerest form of flattery
Date: 23 Mar 2003 20:53:59 -0800
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message news:<b5jrs4$2a6fho$1@ID-77047.news.dfncis.de>...
> Amir Yantimirov wrote:
> 
> > Dmitry A. Kazakov <mailbox@dmitry-kazakov.de> wrote in message
> > news:<vqil7v81l8p8ocbv2ke9ectl8l33rr3gs8@4ax.com>...
>  
> >> In my view to fully support ADT would mean that any of such type
> >> interfaces would be available for private implementation.
> > 
> > In my ideal world you don't need inhere anything:
> > http://www174.pair.com/yamir/programming/interfaces.htm
> 
> Maybe it is just a wording problem. Many dislike the word "inheritance". 
> (:-))

Oops. Sorry. Anyway, the idea is type functionality may be extended
freely so it don't have to be specified in type declaration.

> 
> >> -----
> >> (*) I intentionally omit type ... is tagged ..., because I believe
> >> that *all* types have to be tagged.
> > 
> > Not rare opinion. But I found it somewhere contradicting with you
> > background :). Lots of types I works with has hardwired bits structure.
> 
> Yes, but this does not mean that a hardwired bits cannot be "tagged". You 
> can have even Booleans "tagged". The idea is to have different 
> representations for Boolean and Boolean'Class.

Fine. But what's the gain? I rarely needs any _polymorphic_ feature
for such types above "this type is distinct four-byte thing".

Amir Yantimirov