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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: If not Ada, what else...
Date: Wed, 22 Jul 2015 15:59:01 +0200
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Xref: news.eternal-september.org comp.lang.ada:26985
Date: 2015-07-22T15:59:01+02:00
List-Id: <comp.lang.ada>

On Wed, 22 Jul 2015 05:53:05 -0700 (PDT), Vincent wrote:

> So for me a type has both a set of values and a set of primitive operations.

Set of *all* operations defined on.

That still does not make operations belong to any type. An operation may
take number of types.

> A class type is simply a handler, an access or an interface, whatever one
> calls it,

Class type T'Class is the type representing values of all types derived
from T. It is not a handler, not an access, not an interface, just a type.

>> Then everybody agreed that the syntax of protected objects was a mistake.
>> Why repeating this flawed syntax for classes? It is again about
>> fundamentals, privacy is not a type property. It is of a module.
> 
> Who said that ?

I explained in other subthread. It breaks privacy and its syntax is
irregular.

It should have been kind of:

   type T is protected private;
   type T is protected record ...

and surely one should be able to derive from it or add the "protected"
aspect later to a non-protected type.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de