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From: bobduff@world.std.com (Robert A Duff)
Subject: Re: How to overload assignment in Ada 95?
Date: 1996/12/10
Message-ID: <E27n8o.3v9@world.std.com>#1/1
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distribution: usa
references: <58aclh$ssd@gaia.cc.gatech.edu>
 <bbalfour-0912961334030001@stmac0088.std.caci.com>
 <mheaney-ya023280000912962054110001@news.ni.net>
organization: The World Public Access UNIX, Brookline, MA
newsgroups: comp.lang.ada
Date: 1996-12-10T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <mheaney-ya023280000912962054110001@news.ni.net>,
Matthew Heaney <mheaney@ni.net> wrote:
>In the former case, clients of the Unbounded_Stack have direct visibility
>to the operations Initialize, Finalize, and Adjust.  When is this a good
>thing?  A bad thing?

It is a good thing if you want people to be able to extend the type --
they will override Finalize and friends (and the new version should call
the parent version).  If you don't want that, or want to restrict such
type extensions to child packages, then use the second method.

- Bob