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From: paul.johnson@gecm.com (Paul Johnson)
Subject: Re: Building blocks (Was: Design By Contract)
Date: 1997/09/08
Date: 1997-09-08T00:00:00+00:00	[thread overview]
Message-ID: <5v0bph$n98$2@miranda.gmrc.gecm.com> (raw)
In-Reply-To: 5un58u$9ih$1@gonzo.sun3.iaf.nl


In article <5un58u$9ih$1@gonzo.sun3.iaf.nl>, geert@gonzo.sun3.iaf.nl says...

>Paul Johnson <paul.johnson@gecm.com> wrote:

[On language features versus idiomatic programming]

>   For example Eiffel has direct support for multiple inheritance
>   (MI).  Ada requires you to play games with generic parameters
>   in order to achieve the same effect.''
>
>I find that it is often better to combine simple building blocks
>into the more complex one you need, than to use a more complex
>feature that is not exactly what you need and may be overkill.

[Experiences based on Ada versus C++ omitted]

Please don't judge a language feature (*any* feature) by its implementation
in C++.  The language is a bodge.

Take a look at Eiffel instead.  

> When
> combining ill-defined over-complex things like MI, C++ templates
> and exceptions, you know for sure the result will be too complex
> and not what you want.

And if you do it in C++ I'd agree with you.  However in Eiffel you will
find that MI, templates and exceptions all fit together in a unified
whole.  In fact the Eiffel exception mechanism is superior to the Ada one
because it is built on a theoretical model of software engineering.

Paul.

-- 
Paul Johnson            | GEC-Marconi Ltd is not responsible for my opinions. |
+44 1245 242244         +-----------+-----------------------------------------+
Work: <paul.johnson@gecm.com>       | You are lost in a twisty maze of little
Home: <Paul@treetop.demon.co.uk>    | standards, all different.





  parent reply	other threads:[~1997-09-08  0:00 UTC|newest]

Thread overview: 132+ 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>
     [not found]         ` <349224633wnr@eiffel.demon.co.uk>
1997-08-27  0:00           ` Design by Contract Robert Dewar
1997-08-29  0:00           ` Don Harrison
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           ` 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
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>
     [not found]                       ` <EFzLn7.481@ecf.toronto.edu>
1997-09-04  0:00                         ` Jon S Anthony
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 [this message]
1997-09-08  0:00                             ` Brian Rogoff
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                                 ` Paul Johnson
1997-09-10  0:00                                   ` Darren New
1997-09-10  0:00                                   ` Matthew Heaney
1997-09-10  0:00                                 ` Robert Dewar
1997-09-12  0:00                                   ` Paul Johnson
1997-09-14  0:00                                     ` Robert Dewar
1997-09-15  0:00                                       ` John G. Volan
1997-09-14  0:00                                     ` Robert Dewar
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                               ` W. Wesley Groleau x4923
1997-09-09  0:00                               ` Veli-Pekka Nousiainen
1997-09-09  0:00                                 ` Jon S Anthony
1997-09-09  0:00                               ` Veli-Pekka Nousiainen
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]                       ` <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>
     [not found]                             ` <EG0rp7.GtL@syd.csa.com.au>
1997-09-05  0:00                               ` Design By Contract Matthew Heaney
1997-09-05  0:00                             ` 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
1997-09-09  0:00                           ` Robert A Duff
1997-09-09  0:00                             ` Matthew Heaney
1997-08-28  0:00           ` 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
  -- strict thread matches above, loose matches on Subject: below --
1997-09-09  0:00 Building blocks (Was: Design By Contract) Marc Wachowitz
1997-09-15  0:00 ` Joachim Durchholz
1997-09-17  0:00 ` Paul Johnson
1997-09-18  0:00   ` Robert Dewar
1997-09-18  0:00   ` Jon S Anthony
1997-09-18  0:00   ` Stephen Leake
1997-09-18  0:00     ` W. Wesley Groleau x4923
1997-09-21  0:00       ` Matthew Heaney
1997-09-18  0:00     ` Mark L. Fussell
1997-09-19  0:00       ` Jon S Anthony
1997-09-23  0:00         ` Mark L. Fussell
1997-09-19  0:00       ` Robert A Duff
1997-09-20  0:00         ` Joachim Durchholz
1997-09-22  0:00           ` Matthew Heaney
1997-09-23  0:00             ` Joachim Durchholz
1997-09-23  0:00             ` Veli-Pekka Nousiainen
1997-10-03  0:00               ` Robert I. Eachus
1997-10-04  0:00                 ` Paul Johnson
1997-10-14  0:00                   ` Robert I. Eachus
1997-09-23  0:00           ` Jon S Anthony
1997-09-24  0:00           ` Alan E & Carmel J Brain
1997-09-25  0:00             ` Anonymous
1997-09-30  0:00               ` Alan E & Carmel J Brain
1997-09-30  0:00                 ` Matthew Heaney
1997-09-30  0:00                   ` W. Wesley Groleau x4923
1997-09-30  0:00                     ` Matthew Heaney
1997-10-01  0:00                     ` Alan E & Carmel J Brain
1997-09-30  0:00                   ` Neil Wilson
1997-09-30  0:00                     ` Stephen Leake
1997-10-01  0:00                 ` Anonymous
1997-10-01  0:00                   ` Joachim Durchholz
1997-10-01  0:00                   ` Paul M Gover
1997-10-04  0:00                     ` Paul Johnson
1997-10-04  0:00                       ` Matthew Heaney
1997-10-15  0:00                         ` Paul Johnson
1997-10-15  0:00                           ` Matthew Heaney
1997-10-16  0:00                             ` Joachim Durchholz
1997-10-17  0:00                               ` Robert I. Eachus
1997-10-16  0:00                           ` Joachim Durchholz
1997-10-22  0:00                           ` Reimer Behrends
1997-10-02  0:00                   ` Robert A Duff
1997-10-02  0:00                     ` Tucker Taft
1997-10-02  0:00                       ` Matthew Heaney
1997-10-03  0:00                     ` Stephen Leake
1997-10-04  0:00                     ` Matthew Heaney
1997-10-07  0:00                       ` Robert A Duff
1997-09-24  0:00           ` Richard A. O'Keefe
     [not found]       ` <11861963wnr@eiffel.demon.co.uk>
1997-09-19  0:00         ` Mark L. Fussell
1997-09-09  0:00 Marc Wachowitz
1997-09-11  0:00 Robert Dewar
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