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From: wheeler@aphrodite.csed.ida.org (David Wheeler)
Subject: Re: Comments on generic stack?
Date: 1996/03/17
Message-ID: <4ih1ka$pku@dmsoproto.ida.org>#1/1
X-Deja-AN: 142978359
references: <199603141053.LAA21095@email.enst.fr>
organization: IDA, Alexandria, Virginia
newsgroups: comp.lang.ada
Date: 1996-03-17T00:00:00+00:00
List-Id: <comp.lang.ada>

Jean-Pierre Rosen (rosen@EMAIL.ENST.FR) wrote:
: At 14:11 13/03/1996 GMT, you wrote:
: >
: >  with Ada.Finalization; use Ada.Finalization;
: >
: >  generic
: >    type Item is private;
: >
: >  package Generic_Stack is
: >    type Stack is new Controlled with private; -- permit assignment.
: Why do you need to make it visibly derived from controlled ? Seems to me that
:      type  Stack is private;
: would be OK (even if completed as derived from Controlled).

Agreed, but by making it visibly derived you can derive controlled children
of the type. E.G.: Stacks that when created do something special.
It's a minor functionality; I think either way would be "right".

--- David