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From: nospam@thanks.com.au (Don Harrison)
Subject: Re: Design by Contract
Date: 1997/08/29
Date: 1997-08-29T00:00:00+00:00	[thread overview]
Message-ID: <EFnq5y.2M6@syd.csa.com.au> (raw)
In-Reply-To: 349224633wnr@eiffel.demon.co.uk


Roger Browne wrote:

:"W. Wesley Groleau x4923" <wwgrol@pseserv3.fw.hac.com> writes:
:
:> Suppose Ada added Eiffel assertions and Eiffel added separate
:> compilation of specs.  Or even some sort of automated control that
:> prevented changing contract without special privilege.
:
:No change is required to Eiffel to enable project managers to keep a hold of 
:the specs whilst letting programmers loose on the implementation.
:
:Simply code the spec as abstract classes in separate (locked) files and let 
:the programmers write the concrete implementation in child classes.

I tend to think deferred classes are not the proper analogue of Ada package
specifications.

Ada package specs, unlike Eiffel deferred classes exist for every module, 
so a better analogue for this module concept may be the class short form.
Deferred classes (specifically, the type aspects of them) are more analogous 
to Ada abstact types, IMO.


Don.                     (Reverse to reply)
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Don Harrison             au.com.csa.syd@donh






  parent 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>
     [not found]             ` <34058808.3BF@pseserv3.fw.hac.com>
1997-08-28  0:00               ` Darren New
1997-08-28  0:00             ` Patrick Doyle
1997-09-06  0:00               ` Joachim Durchholz
1997-09-06  0:00                 ` Patrick Doyle
     [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]         ` <349224633wnr@eiffel.demon.co.uk>
1997-08-27  0:00           ` Design by Contract Robert Dewar
1997-08-29  0:00           ` Don Harrison [this message]
     [not found]         ` <EFM140.Fy9@syd.csa.com.au>
1997-08-28  0:00           ` Design By Contract 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                   ` 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                               ` Veli-Pekka Nousiainen
1997-09-09  0:00                                 ` Jon S Anthony
1997-09-09  0:00                               ` W. Wesley Groleau x4923
1997-09-09  0:00                               ` Veli-Pekka Nousiainen
1997-09-09  0:00                               ` Matthew Heaney
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
1997-09-09  0:00                                 ` Brian Rogoff
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
1997-09-10  0:00                                 ` Paul Johnson
1997-09-10  0:00                                   ` Darren New
1997-09-10  0:00                                   ` Matthew Heaney
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
1997-09-11  0:00                               ` subjectivity Don Harrison
1997-09-10  0:00                             ` subjectivity W. Wesley Groleau x4923
     [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
1997-09-02  0:00                   ` Joerg Rodemann
1997-09-02  0:00                     ` Jon S Anthony
1997-08-29  0:00             ` Patrick Doyle
1997-08-29  0:00               ` Jon S Anthony
     [not found]                 ` <EFqDw0.3x7@ecf.toronto.edu>
     [not found]                   ` <JSA.97Aug30145354@alexandria.organon.com>
1997-09-01  0:00                     ` Patrick Doyle
     [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
1997-08-25  0:00                         ` Steve Stringfellow
1997-08-26  0:00                         ` Don Harrison
1997-08-25  0:00                       ` 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                       ` 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
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