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From: jsa@alexandria.organon.com (Jon S Anthony)
Subject: Re: Design By Contract
Date: 1997/08/29
Date: 1997-08-29T00:00:00+00:00	[thread overview]
Message-ID: <JSA.97Aug29151419@alexandria.organon.com> (raw)
In-Reply-To: EFnK04.J43@ecf.toronto.edu


In article <EFnK04.J43@ecf.toronto.edu> doylep@ecf.toronto.edu (Patrick Doyle) writes:

> >Isn't that exactly the point?  Why should a client be able to see the
> >actual structure, aka implementation????
> 
>   If you mean that Eiffel is letting the structure leak out by
> providing access to data members, then that's not true.  The

No.  That's not what I'm saying.  I'm not commenting about the Eiffel
approach at all (which in any event has nothing much to offer over the
Ada approach here anyway - beyond certain personal preferences that
is).

>   So in conclusion, no, revealing the data members in this
> way does not break encapsulation.  Note, however, that this

No one claimed otherwise.

>   To answer your question, the client may be able to see
> the data members, but the client can't possibly *know*

This at least touches on my point and IMO, this is problematic.

/Jon
-- 
Jon Anthony
OMI, Belmont, MA 02178, 617.484.3383 
"Nightmares - Ha!  The way my life's been going lately,
 Who'd notice?"  -- Londo Mollari




  reply	other threads:[~1997-08-29  0:00 UTC|newest]

Thread overview: 106+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1997-08-21  0:00 Critique of Ariane 5 paper (finally!) aek
     [not found] ` <33FC66AD.9A0799D4@calfp.co.uk>
1997-08-22  0:00   ` Robert S. White
1997-08-22  0:00     ` Samuel Mize
1997-08-22  0:00       ` Samuel Mize
1997-08-23  0:00     ` Ken Garlington
     [not found]   ` <33FFA4B1.3543@flash.net>
1997-08-26  0:00     ` Nick Leaton
     [not found]       ` <3403940F.4154@pseserv3.fw.hac.com>
1997-08-27  0:00         ` Design By Contract Ted Velkoff
     [not found]           ` <5u3c6v$gtf$2@miranda.gmrc.gecm.com>
1997-08-28  0:00             ` Patrick Doyle
1997-09-06  0:00               ` Joachim Durchholz
1997-09-06  0:00                 ` Patrick Doyle
     [not found]             ` <34058808.3BF@pseserv3.fw.hac.com>
1997-08-28  0:00               ` Darren New
     [not found]           ` <JSA.97Aug27180328@alexandria.organon.com>
1997-08-28  0:00             ` W. Wesley Groleau x4923
1997-09-03  0:00             ` Don Harrison
1997-09-03  0:00               ` Jon S Anthony
1997-09-04  0:00                 ` Don Harrison
     [not found]         ` <EFM140.Fy9@syd.csa.com.au>
1997-08-28  0:00           ` Robert Dewar
1997-08-29  0:00             ` Don Harrison
1997-08-28  0:00           ` Jon S Anthony
1997-08-29  0:00             ` Don Harrison
1997-08-29  0:00               ` Jon S Anthony
     [not found]                 ` <EFqE8L.4Eq@ecf.toronto.edu>
     [not found]                   ` <JSA.97Aug30145058@alexandria.organon.com>
1997-09-01  0:00                     ` Patrick Doyle
1997-09-02  0:00                 ` Don Harrison
1997-09-02  0:00                   ` Joerg Rodemann
1997-09-02  0:00                     ` Jon S Anthony
1997-09-02  0:00                   ` Jon S Anthony
1997-09-03  0:00                     ` Don Harrison
     [not found]                     ` <JSA.97Sep3201329@alexandria.organon.com>
1997-09-04  0:00                       ` Paul Johnson
1997-09-05  0:00                         ` Jon S Anthony
     [not found]                         ` <5un58u$9ih$1@gonzo.sun3.iaf.nl>
1997-09-06  0:00                           ` Building blocks (Was: Design By Contract) Joachim Durchholz
1997-09-08  0:00                           ` Paul Johnson
1997-09-08  0:00                             ` Brian Rogoff
1997-09-09  0:00                               ` W. Wesley Groleau x4923
1997-09-09  0:00                               ` Matthew Heaney
1997-09-09  0:00                                 ` Brian Rogoff
1997-09-09  0:00                                 ` W. Wesley Groleau x4923
1997-09-10  0:00                                   ` Robert A Duff
1997-09-12  0:00                                     ` Jon S Anthony
1997-09-10  0:00                                 ` Paul Johnson
1997-09-10  0:00                                   ` Matthew Heaney
1997-09-10  0:00                                   ` Darren New
1997-09-10  0:00                                 ` Robert Dewar
1997-09-12  0:00                                   ` Paul Johnson
1997-09-14  0:00                                     ` Robert Dewar
1997-09-14  0:00                                     ` Robert Dewar
1997-09-15  0:00                                       ` John G. Volan
1997-09-14  0:00                                     ` Robert Dewar
1997-09-12  0:00                                   ` Jon S Anthony
1997-09-12  0:00                                     ` Robert Dewar
1997-09-16  0:00                                       ` Brian Rogoff
1997-09-09  0:00                               ` Veli-Pekka Nousiainen
1997-09-09  0:00                               ` Veli-Pekka Nousiainen
1997-09-09  0:00                                 ` Jon S Anthony
1997-09-08  0:00                         ` Design By Contract Nick Leaton
1997-09-08  0:00                           ` Matthew Heaney
1997-09-09  0:00                           ` Paul Johnson
     [not found]                       ` <EFzLn7.481@ecf.toronto.edu>
1997-09-04  0:00                         ` Jon S Anthony
     [not found]                       ` <EFz0pD.E6n@syd.csa.com.au>
1997-09-05  0:00                         ` W. Wesley Groleau x4923
1997-09-05  0:00                         ` subjectivity W. Wesley Groleau x4923
1997-09-05  0:00                           ` subjectivity Matthew Heaney
1997-09-10  0:00                             ` subjectivity Don Harrison
1997-09-12  0:00                               ` subjectivity Jon S Anthony
1997-09-16  0:00                                 ` subjectivity Don Harrison
1997-09-16  0:00                                   ` subjectivity Jon S Anthony
1997-09-10  0:00                           ` subjectivity Don Harrison
1997-09-10  0:00                             ` subjectivity W. Wesley Groleau x4923
1997-09-10  0:00                             ` subjectivity W. Wesley Groleau x4923
1997-09-11  0:00                               ` subjectivity Don Harrison
     [not found]                         ` <JSA.97Sep4172912@alexandria.organon.com>
     [not found]                           ` <EG0oz8.F6M@syd.csa.com.au>
1997-09-05  0:00                             ` Design By Contract Jon S Anthony
1997-09-05  0:00                               ` Nick Leaton
1997-09-08  0:00                                 ` Jon S Anthony
1997-09-09  0:00                                   ` Nick Leaton
1997-09-10  0:00                                     ` Paul Johnson
1997-09-06  0:00                               ` Patrick Doyle
     [not found]                             ` <EG0rp7.GtL@syd.csa.com.au>
1997-09-05  0:00                               ` Matthew Heaney
1997-09-09  0:00                           ` Robert A Duff
1997-09-09  0:00                             ` Matthew Heaney
1997-08-29  0:00             ` Patrick Doyle
1997-08-29  0:00               ` Jon S Anthony [this message]
     [not found]                 ` <EFqDw0.3x7@ecf.toronto.edu>
     [not found]                   ` <JSA.97Aug30145354@alexandria.organon.com>
1997-09-01  0:00                     ` Patrick Doyle
     [not found]         ` <349224633wnr@eiffel.demon.co.uk>
1997-08-27  0:00           ` Design by Contract Robert Dewar
1997-08-29  0:00           ` Don Harrison
     [not found]       ` <3406BEF7.2FC3@flash.net>
     [not found]         ` <3406E0F7.6FF7ED99@calfp.co.uk>
1997-09-02  0:00           ` Critique of Ariane 5 paper (finally!) Ken Garlington
     [not found] <5u1627$1fak@info4.rus.uni-stuttgart.de>
     [not found] ` <EFM1Lx.GD2@syd.csa.com.au>
1997-08-28  0:00   ` Design by Contract Robert Dewar
  -- strict thread matches above, loose matches on Subject: below --
1997-08-07  0:00 Safety-critical development in Ada and Eiffel Ken Garlington
1997-08-12  0:00 ` Don Harrison
1997-08-12  0:00   ` Jon S Anthony
1997-08-13  0:00     ` Ted Velkoff
1997-08-13  0:00       ` Ken Garlington
1997-08-14  0:00         ` Nick Leaton
1997-08-18  0:00           ` Joachim Durchholz
1997-08-19  0:00             ` Ken Garlington
1997-08-21  0:00               ` Joachim Durchholz
1997-08-23  0:00                 ` Ken Garlington
     [not found]                   ` <JSA.97Aug25181856@alexandria.organon.com>
     [not found]                     ` <34023A1F.41C67EA6@eiffel.com>
1997-08-25  0:00                       ` Design by Contract Bertrand Meyer
     [not found]                         ` <JSA.97Aug26151833@alexandria.organon.com>
1997-08-27  0:00                           ` Patrick Doyle
1997-08-25  0:00                       ` Bertrand Meyer
1997-08-25  0:00                         ` Steve Stringfellow
1997-08-26  0:00                         ` Don Harrison
1997-08-25  0:00                       ` Bertrand Meyer
     [not found]                         ` <3402d123.0@news.uni-ulm.de>
1997-08-26  0:00                           ` Nick Leaton
     [not found]                             ` <3402e51d.0@news.uni-ulm.de>
     [not found]                               ` <3402E8C9.3384D976@calfp.co.uk>
     [not found]                                 ` <dewar.872631036@merv>
1997-08-27  0:00                                   ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-08-27  0:00                                   ` Ted Velkoff
     [not found]                                   ` <34050F3C.5A3A@invest.amp.com.au>
1997-08-28  0:00                                     ` Robert Dewar
1997-08-29  0:00                                       ` Paul Johnson
1997-08-31  0:00                                         ` Matt Kennel (Remove 'NOSPAM' to reply)
1997-09-01  0:00                                           ` John F. Bell III
1997-09-02  0:00                                             ` Ken Garlington
1997-09-05  0:00                                               ` Robert Dewar
     [not found]                                         ` <dewar.872887402@merv>
1997-09-02  0:00                                           ` Ken Garlington
1997-09-03  0:00                                             ` Thomas Beale
     [not found]                                               ` <EFxx8q.2sw@ecf.toronto.edu>
1997-09-04  0:00                                                 ` Thomas Beale
1997-09-05  0:00                                             ` Robert Dewar
1997-09-05  0:00                                               ` Ken Garlington
     [not found]                             ` <340306E1.5FB64D70@XYZZYcalfp.com>
1997-08-28  0:00                               ` Mark Bennison
     [not found]                         ` <bengtk-2708972209500001@sl35.modempool.kth.se>
1997-08-28  0:00                           ` Nick Leaton
1997-08-25  0:00                       ` Bertrand Meyer
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