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From: dale@cs.rmit.edu.au (Dale Stanbrough)
Subject: Re: Private Children
Date: 1999/06/22
Date: 1999-06-22T04:24:49+00:00	[thread overview]
Message-ID: <dale-2206991424480001@192.168.0.2> (raw)
In-Reply-To: 7kmoe4$o83@dfw-ixnews15.ix.netcom.com

Richard D Riehle wrote:

"  Thanks Tucker. This is a good idea. Also, consider,
   
         package P.Hidden_Level.Public_Level is
           type some-type is tagged private;
           -- some publicly exported services
         private
           ...
         end P.Hidden_Level.Public_Level ;
  
         package body P.Hidden_Level.Public_Level is
            -- implement exported services using the
            -- private services in the hierarchy since
            -- the body can see the private declarations
            -- of parent its units.
         end P.Hidden_Level.Public_Level;"

It's still a bit ordinary though. The services offered in the
public level can't rely on abstractions advertised in the private
section, which I see as the major failure of this model.

Dale




  reply	other threads:[~1999-06-22  0:00 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-06-20  0:00 Private Children Matthew Heaney
1999-06-21  0:00 ` Ted Dennison
1999-06-21  0:00   ` Tucker Taft
1999-06-21  0:00     ` Matthew Heaney
1999-06-21  0:00       ` Tucker Taft
1999-06-22  0:00         ` Richard D Riehle
1999-06-22  0:00           ` Dale Stanbrough [this message]
1999-06-22  0:00             ` Matthew Heaney
1999-06-23  0:00               ` Dale Stanbrough
1999-06-23  0:00                 ` Matthew Heaney
1999-06-23  0:00                   ` Dale Stanbrough
1999-06-23  0:00                     ` Richard D Riehle
1999-06-23  0:00                       ` Vladimir Olensky
1999-06-23  0:00                         ` Richard D Riehle
1999-06-24  0:00                           ` Hyman Rosen
1999-06-24  0:00                             ` Richard D Riehle
1999-06-23  0:00                       ` John Duncan
1999-06-24  0:00                       ` Dale Stanbrough
1999-06-22  0:00             ` Richard D Riehle
1999-06-21  0:00     ` Matthew Heaney
1999-06-25  0:00   ` Robert Dewar
1999-06-21  0:00 ` Dale Stanbrough
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