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From: jsa@alexandria (Jon S Anthony)
Subject: Re: Eiffel and Java + Ada dispatching
Date: 1996/10/31
Date: 1996-10-31T00:00:00+00:00	[thread overview]
Message-ID: <JSA.96Oct30213354@alexandria> (raw)
In-Reply-To: E00t53.CG2@syd.csa.com.au


In article <557ce3$ojh@tjnews.is.s.u-tokyo.ac.jp> jezequel@piccolo.is.s.u-tokyo.ac.jp (Jean-Marc Jezequel) writes:

> 2) but this is combined with the static overloading inherited from
> Ada83; which is merely syntactic sugar for routine having
> (statically) different signatures.

Criminey!  This is wrong too.  It is not "merely syntactic sugar", as it
is part and parcel of why Ada does not need any system validity checks!


> In this respect, it is exactly like C++ or Java, but for the
> symetric syntax.

This isn't correct either.  There are some other semantic aspects
floating around that make it different from C++/Java in this area.


> May be the confusion comes form the fact that in CLOS, this symetric
> syntax is used for the real thing: multiple dispatch.

Well, you got this right at any rate...


> The only thing you really need to make use of OO polymorphism is
> dynamic binding.  While having at the same time static overloading
> can make some code fragment more "natural" to write, the apparent
> proximity of this feature with dynamic binding yield so much
> confusion on the non-expert eyes that you do not wonder why I prefer
> to teach Eiffel rather than C++, Java or even Ada95.

I guess you like system validity problems.


> As an aside, I once wrote a paper on how to emulate multiple
> dispatch in a parallel linear algebra library in Eiffel, and it was
> refused on the ground that a well known existing library had already
> solved the problem using C++ overloading. Even this "expert" C++
> referee had no clue on the difference between static and dynamic
> binding :-(

I am having a bit of the same suspicion here...

/Jon
-- 
Jon Anthony
Organon Motives, Inc.
Belmont, MA 02178
617.484.3383
jsa@organon.com





  parent reply	other threads:[~1996-10-31  0:00 UTC|newest]

Thread overview: 162+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1996-10-27  0:00 Eiffel and Java Vincent WEBER
1996-10-27  0:00 ` Jean-Michel P. Decombe
1996-10-28  0:00   ` Robert Dewar
1996-10-31  0:00     ` Doug Marker
1996-10-28  0:00   ` Alexandre Oliva
1996-10-28  0:00   ` David Hanley
1996-10-28  0:00     ` Matt Kennel
1996-10-29  0:00   ` Chris Trimble
1996-10-31  0:00     ` Doug Marker
1996-10-31  0:00   ` David Bennett
1996-10-28  0:00 ` Larry Kilgallen
1996-10-30  0:00   ` Ronald Cole
1996-10-28  0:00 ` Matthew Heaney
1996-10-29  0:00   ` Vincent WEBER
1996-10-31  0:00     ` James McKim
1996-11-01  0:00       ` Matthew Heaney
1996-11-04  0:00         ` James McKim
1996-10-30  0:00   ` Jon S Anthony
1996-11-01  0:00     ` Eiffel and Java + Ada dispatching Jean-Marc Jezequel
1996-10-30  0:00   ` Eiffel and Java Don Harrison
1996-10-31  0:00     ` James McKim
1996-11-04  0:00       ` Don Harrison
1996-11-23  0:00       ` Van Snyder
1996-10-31  0:00   ` Joachim Durchholz
1996-11-01  0:00   ` Norman H. Cohen
1996-11-02  0:00   ` Eiffel and Java + Ada dispatching Jon S Anthony
1996-11-02  0:00   ` Eiffel and Java Jon S Anthony
1996-11-03  0:00   ` Joachim Durchholz
1996-11-05  0:00   ` Norman H. Cohen
1996-10-29  0:00 ` Don Harrison
1996-10-29  0:00   ` Fergus Henderson
1996-10-30  0:00     ` Don Harrison
1996-10-30  0:00       ` Fergus Henderson
1996-10-31  0:00     ` David L. Shang
1996-11-01  0:00       ` Matt Kennel
1996-11-04  0:00         ` David L. Shang
1996-11-05  0:00           ` Matt Kennel
1996-11-06  0:00             ` David L. Shang
1996-11-04  0:00       ` Robert I. Eachus
1996-11-01  0:00     ` Jon S Anthony
1996-11-02  0:00       ` Fergus Henderson
1996-11-04  0:00       ` David L. Shang
1996-11-05  0:00         ` Jon S Anthony
1996-11-02  0:00     ` Darko BUDOR
1996-11-02  0:00       ` Fergus Henderson
1996-11-03  0:00         ` Matt Kennel
1996-11-03  0:00         ` Darko BUDOR
1996-11-03  0:00     ` Jon S Anthony
1996-11-03  0:00     ` Matthias Ernst
1996-11-05  0:00     ` Jon S Anthony
1996-11-10  0:00     ` Marcos F. F. de Macedo
1996-11-11  0:00       ` David L. Shang
1996-11-12  0:00         ` Fergus Henderson
1996-11-12  0:00           ` David L. Shang
1996-11-12  0:00             ` David L. Shang
1996-11-16  0:00             ` Fergus Henderson
1996-11-18  0:00               ` David L. Shang
1996-11-18  0:00             ` Kai Quale
1996-11-18  0:00               ` David L. Shang
1996-11-25  0:00                 ` Kai Quale
1996-11-15  0:00         ` Paul Johnson
1996-11-12  0:00       ` Alexander Asteroth
1996-11-11  0:00         ` Marcos F. F. de Macedo
1996-11-12  0:00         ` Benedict A. Gomes
1996-11-12  0:00         ` Matt Kennel
1996-10-29  0:00   ` Eiffel and Java + Ada dispatching Vincent WEBER
1996-10-30  0:00     ` Jean-Marc Jezequel
1996-11-01  0:00       ` Joachim Durchholz
1996-11-01  0:00       ` Don Harrison
1996-10-30  0:00     ` Don Harrison
1996-10-30  0:00       ` Jon S Anthony
1996-10-30  0:00   ` Robert I. Eachus
1996-10-30  0:00   ` Eiffel and Java David Petrie Stoutamire
1996-10-30  0:00   ` Eiffel and Java + Ada dispatching Jon S Anthony
1996-11-04  0:00     ` Don Harrison
1996-11-04  0:00       ` C to Ada Ali Mirhosseini
1996-11-04  0:00         ` Robert Dewar
1996-11-04  0:00         ` Matthew Daniel
1996-11-05  0:00       ` Eiffel and Java + Ada dispatching Jon S Anthony
1996-11-05  0:00         ` Don Harrison
1996-11-06  0:00           ` Jon S Anthony
1996-10-31  0:00   ` Jon S Anthony [this message]
     [not found]     ` <E06F2B.Az7@syd.csa.com.au>
1996-11-01  0:00       ` Jon S Anthony
1996-11-04  0:00         ` Don Harrison
1996-11-05  0:00           ` Jon S Anthony
1996-11-02  0:00       ` Robert Dewar
1996-11-04  0:00         ` Norman H. Cohen
1996-11-05  0:00         ` Don Harrison
1996-11-05  0:00           ` Joachim Durchholz
1996-11-05  0:00           ` Robb Nebbe
1996-11-06  0:00             ` Jean-Marc Jezequel
1996-11-07  0:00               ` Robb Nebbe
1996-11-06  0:00             ` To overload or not to overload (was Eiffel and Java + Ada dispatching) Don Harrison
1996-11-06  0:00               ` Robb Nebbe
1996-11-07  0:00                 ` Norman H. Cohen
1996-11-07  0:00                 ` Don Harrison
1996-11-07  0:00                   ` Jon S Anthony
1996-11-11  0:00                     ` Don Harrison
1996-11-07  0:00                   ` Juergen Schlegelmilch
1996-11-08  0:00                     ` Don Harrison
1996-11-08  0:00                       ` Don Harrison
1996-11-14  0:00                         ` Jon S Anthony
1996-11-14  0:00                     ` Jon S Anthony
1996-11-07  0:00                   ` Jon S Anthony
1996-11-08  0:00                   ` bill.williams
1996-11-11  0:00                     ` Don Harrison
1996-11-08  0:00             ` Eiffel and Java + Ada dispatching Robert I. Eachus
1996-11-06  0:00           ` Robert I. Eachus
1996-11-08  0:00             ` Don Harrison
1996-11-08  0:00               ` Robert A Duff
1996-11-12  0:00                 ` Don Harrison
1996-11-12  0:00                   ` Joachim Durchholz
1996-11-15  0:00                     ` Richard Riehle
1996-11-16  0:00                     ` Interfacing contracts (Was: Eiffel and Java + Ada dispatching) Geert Bosch
1996-11-17  0:00                       ` Robert A Duff
1996-11-12  0:00                   ` Eiffel and Java + Ada dispatching Robert A Duff
1996-11-13  0:00                     ` Don Harrison
1996-11-13  0:00                       ` Jon S Anthony
1996-11-15  0:00                         ` Don Harrison
1996-11-19  0:00                           ` Jon S Anthony
1996-11-20  0:00                             ` Don Harrison
1996-11-13  0:00                       ` Robert A Duff
1996-11-14  0:00                         ` Don Harrison
1996-11-08  0:00               ` Jon S Anthony
1996-11-14  0:00               ` Robert I. Eachus
1996-11-14  0:00                 ` Robert A Duff
1996-11-15  0:00                 ` Don Harrison
1996-11-15  0:00                   ` Robert I. Eachus
1996-11-19  0:00                     ` Don Harrison
1996-11-18  0:00                       ` Vincent Celier
1996-11-22  0:00                         ` Don Harrison
1996-11-19  0:00                 ` Jon S Anthony
1996-11-15  0:00               ` portmanteau (was Re: Eiffel and Java + Ada dispatching) Robert I. Eachus
1996-11-07  0:00           ` Eiffel and Java + Ada dispatching Robb Nebbe
1996-11-07  0:00           ` Jon S Anthony
1996-11-12  0:00           ` Jon S Anthony
1996-11-01  0:00     ` Jean-Marc Jezequel
1996-10-31  0:00   ` Joachim Durchholz
1996-11-01  0:00   ` Eiffel and Java Matthias Ernst
1996-11-01  0:00     ` William Clodius
1996-11-01  0:00     ` Benedict A. Gomes
1996-11-02  0:00   ` Eiffel and Java + Ada dispatching Jon S Anthony
1996-11-02  0:00   ` Jon S Anthony
1996-11-04  0:00   ` Eiffel and Java Robert I. Eachus
1996-10-30  0:00 ` Jon S Anthony
1996-11-01  0:00   ` Don Harrison
1996-11-01  0:00     ` Jon S Anthony
1996-11-07  0:00       ` Marcos F. F. de Macedo
1996-11-11  0:00         ` Ian Joyner
1996-11-12  0:00         ` Don Harrison
1996-11-13  0:00           ` Norman H. Cohen
1996-11-15  0:00             ` Don Harrison
1996-11-14  0:00           ` Jon S Anthony
1996-11-15  0:00             ` Don Harrison
1996-11-19  0:00               ` Jon S Anthony
1996-11-21  0:00                 ` Don Harrison
1996-11-12  0:00     ` Jon S Anthony
1996-10-31  0:00 ` Joachim Durchholz
1996-11-01  0:00 ` Jon S Anthony
1996-11-02  0:00 ` Jon S Anthony
1996-11-03  0:00 ` Eiffel and Java + Ada dispatching Joachim Durchholz
1996-11-04  0:00 ` Eiffel and Java Richard A. O'Keefe
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