From: bobduff@world.std.com (Robert A Duff)
Subject: Re: Multiple Type Interfaces
Date: 1997/01/29
Date: 1997-01-29T00:00:00+00:00 [thread overview]
Message-ID: <E4s5z9.5rH@world.std.com> (raw)
In-Reply-To: 5cnl86INNam9@snoopy.cis.ohio-state.edu
In article <5cnl86INNam9@snoopy.cis.ohio-state.edu>,
david scott gibson <dgibson@snoopy.cis.ohio-state.edu> wrote:
>In article <mheaney-ya023280002801972134070001@news.ni.net>,
>Right, but I *do* want it to be "primitive" in the sense that it would be
>included in the interface of package extensions. I *don't* want it
>to be a primitive operation associated with only the single controlling
>operand type (as Ada95 requires). Declaring an operand at T2'Class
>was just a suggestion to try getting around the rule prohibiting
>multiple controlling operands.
What you suggest leads to multi-dispatch, no? ALthough in a more
limited, and perhaps easier-to-deal-with form than CLOS. The whole
point of disallowing an operation to be primitive on two tagged types
was to avoid confusions related to multi-dispatch. I mean, what you're
asking for (package derivation) means that two (or more) types get
simultaneously derived, respectively, so you end up with ops on the two
(or more) derived types. Double (or multi) dispatch. Like I said, the
idea has occurred to me, but I haven't though it through. I *suspect*
it adds a fair amount of complexity.
Note that the package derivation suggested here is very different from
the normal "packages as objects" and "package types" idea that various
people have proposed, as a (not good, IMHO) way of extending Ada 83 to
be OOP.
- Bob
next prev parent reply other threads:[~1997-01-29 0:00 UTC|newest]
Thread overview: 379+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-01-16 0:00 OO, C++, and something much better! Jon S Anthony
1997-01-17 0:00 ` Don Harrison
1997-01-16 0:00 ` Matthew Heaney
1997-01-17 0:00 ` Alan Lovejoy
1997-01-17 0:00 ` Norman H. Cohen
1997-01-17 0:00 ` Alan Lovejoy
1997-01-18 0:00 ` Fergus Henderson
1997-01-17 0:00 ` Alan Lovejoy
1997-01-20 0:00 ` Fergus Henderson
1997-01-19 0:00 ` Alan Lovejoy
1997-01-20 0:00 ` Damon Feldman
1997-01-19 0:00 ` Alan Lovejoy
1997-01-20 0:00 ` Bill Gooch
1997-01-20 0:00 ` David Hanley
1997-01-21 0:00 ` Alan Lovejoy
1997-01-22 0:00 ` Fergus Henderson
1997-01-22 0:00 ` Alan Lovejoy
1997-01-23 0:00 ` Bob Jarvis
1997-01-20 0:00 ` Graham Hughes
1997-01-21 0:00 ` Alan Lovejoy
1997-01-21 0:00 ` Marc Robertson
1997-01-24 0:00 ` Mark Windholtz
1997-01-27 0:00 ` David Hanley
1997-01-28 0:00 ` Eric Clayberg
1997-01-28 0:00 ` David Hanley
[not found] ` <32EE2FEE.62FE@p <32EE8415.2F5B@netright.com>
1997-01-28 0:00 ` Eric Clayberg
1997-01-29 0:00 ` David Hanley
1997-01-29 0:00 ` Eric Clayberg
1997-01-28 0:00 ` Alan Lovejoy
1997-01-29 0:00 ` Matt Kennel
1997-01-30 0:00 ` Alan Lovejoy
1997-01-30 0:00 ` Black box or white box (Re: OO, C++, and something much better!) David L. Shang
1997-01-30 0:00 ` OO, C++, and something much better! David L. Shang
1997-01-29 0:00 ` Jun Nolasco
1997-01-21 0:00 ` Matt Kennel
1997-01-22 0:00 ` Fergus Henderson
1997-01-22 0:00 ` Eric Clayberg
1997-01-22 0:00 ` Graham Hughes
1997-01-23 0:00 ` Mark Woodruff
1997-01-23 0:00 ` Eric Clayberg
1997-01-23 0:00 ` Claus Reinke
1997-01-25 0:00 ` Eric Clayberg
1997-01-25 0:00 ` Fergus Henderson
1997-01-25 0:00 ` Lawrence G. Mayka
1997-01-28 0:00 ` Claus Reinke
1997-01-24 0:00 ` Don Harrison
1997-01-24 0:00 ` Eric Clayberg
1997-01-28 0:00 ` Don Harrison
1997-01-24 0:00 ` Richard A. O'Keefe
[not found] ` <E4voIF.86o@world.std.com>
1997-02-12 0:00 ` Ulf Schuenemann
1997-01-23 0:00 ` Matt Kennel
1997-01-25 0:00 ` Eric Clayberg
1997-01-27 0:00 ` Jon S Anthony
1997-01-23 0:00 ` Robb Nebbe
1997-01-23 0:00 ` David Hanley
1997-01-25 0:00 ` Eric Clayberg
1997-01-24 0:00 ` Fergus Henderson
1997-01-24 0:00 ` Alan Lovejoy
1997-01-26 0:00 ` Fergus Henderson
[not found] ` <32E9BAAC. <5ce8t3$6gv@mulga.cs.mu.OZ.AU>
1997-01-28 0:00 ` Alan Lovejoy
1997-01-28 0:00 ` Alan Knight
1997-01-29 0:00 ` Nick Leaton
1997-01-29 0:00 ` Fergus Henderson
1997-01-30 0:00 ` Alan Lovejoy
1997-01-24 0:00 ` Richard A. O'Keefe
1997-01-22 0:00 ` Fergus Henderson
1997-01-25 0:00 ` Joachim Durchholz
1997-01-27 0:00 ` Ed Shirk
1997-01-27 0:00 ` Rolf Breuning
1997-01-22 0:00 ` Damon Feldman
1997-01-29 0:00 ` Joachim Durchholz
1997-01-25 0:00 ` Jon S Anthony
1997-01-25 0:00 ` Eric Clayberg
1997-01-26 0:00 ` Robert Dewar
1997-01-27 0:00 ` Samuel S. Shuster
1997-01-27 0:00 ` Richard Kenner
1997-01-29 0:00 ` Robert Dewar
1997-01-30 0:00 ` Eirik Mangseth
1997-01-28 0:00 ` Jun Nolasco
1997-01-29 0:00 ` Robert Dewar
1997-01-29 0:00 ` Richard Kenner
1997-01-29 0:00 ` David Hanley
1997-01-29 0:00 ` Richard Kenner
1997-01-30 0:00 ` Nick Leaton
1997-01-30 0:00 ` Richard Kenner
1997-01-30 0:00 ` Nick Leaton
1997-01-30 0:00 ` Robert Dewar
1997-01-27 0:00 ` Bob Jarvis
1997-01-27 0:00 ` Robert Dewar
1997-01-27 0:00 ` Eric Clayberg
1997-01-27 0:00 ` Eric Clayberg
1997-01-29 0:00 ` Robert Dewar
1997-01-29 0:00 ` Robert A Duff
1997-01-29 0:00 ` Eric Clayberg
1997-01-27 0:00 ` Matthew Heaney
1997-01-27 0:00 ` Robert A Duff
1997-01-29 0:00 ` Robert Dewar
1997-01-28 0:00 ` Robert I. Eachus
1997-02-08 0:00 ` Robin Rosenberg
1997-01-27 0:00 ` Jon S Anthony
1997-01-27 0:00 ` Eric Clayberg
1997-01-29 0:00 ` Fergus Henderson
1997-01-29 0:00 ` Joachim Durchholz
1997-01-27 0:00 ` David Hanley
1997-01-29 0:00 ` Joachim Durchholz
1997-01-29 0:00 ` Dennis Smith
1997-01-28 0:00 ` Eric Clayberg
1997-01-28 0:00 ` Matt Kennel
1997-01-28 0:00 ` David Hanley
1997-01-28 0:00 ` Jacqueline U. Robertson
1997-01-29 0:00 ` David Hanley
1997-01-29 0:00 ` Fergus Henderson
1997-01-30 0:00 ` Robert C. Martin
[not found] ` <5cr068$gpa@uni.library.ucla.edu>
1997-06-27 0:00 ` David Shang
1997-06-28 0:00 ` Mike Stark
1997-06-28 0:00 ` Ronald E Jeffries
1997-06-29 0:00 ` Mike Anderson
1997-06-29 0:00 ` Robert Dewar
1997-06-30 0:00 ` Kohler Markus
1997-01-29 0:00 ` Joachim Durchholz
1997-01-28 0:00 ` Robert I. Eachus
1997-01-28 0:00 ` Luther Hampton
1997-01-28 0:00 ` David Hanley
1997-01-29 0:00 ` David Hanley
1997-01-29 0:00 ` Eric Clayberg
1997-01-29 0:00 ` Jon S Anthony
1997-01-29 0:00 ` Eric Clayberg
1997-01-29 0:00 ` Rolf Breuning
1997-01-25 0:00 ` Robert Dewar
1997-01-27 0:00 ` Bob Jarvis
1997-01-27 0:00 ` Robert Dewar
1997-01-28 0:00 ` Alan Lovejoy
1997-01-25 0:00 ` Robert Dewar
1997-01-26 0:00 ` James O'Connor
1997-01-26 0:00 ` Robert Dewar
1997-01-26 0:00 ` George Wolke
1997-01-27 0:00 ` Jerry van Dijk
1997-01-28 0:00 ` Robert A Duff
1997-01-28 0:00 ` Jerry van Dijk
1997-01-29 0:00 ` Stanley R. Allen
1997-01-30 0:00 ` Robert A Duff
1997-01-28 0:00 ` Alan Lovejoy
1997-01-28 0:00 ` Jon S Anthony
1997-01-29 0:00 ` Robert A Duff
1997-01-19 0:00 ` Soren Skogstad Nielsen
1997-01-20 0:00 ` Joachim Durchholz
1997-01-26 0:00 ` Joachim Durchholz
1997-01-29 0:00 ` Multiple Type Interfaces Jon S Anthony
1997-01-28 0:00 ` Dave Gibson
1997-01-28 0:00 ` Robert A Duff
1997-01-28 0:00 ` Norman H. Cohen
1997-01-28 0:00 ` david scott gibson
1997-01-28 0:00 ` Matthew Heaney
1997-01-29 0:00 ` david scott gibson
1997-01-29 0:00 ` Robert A Duff [this message]
1997-01-29 0:00 ` david scott gibson
1997-01-21 0:00 ` OO, C++, and something much better! Matthew S. Whiting
1997-01-22 0:00 ` Fergus Henderson
1997-01-22 0:00 ` Alan Lovejoy
1997-01-22 0:00 ` Eric Clayberg
1997-01-23 0:00 ` Don Harrison
1997-01-27 0:00 ` John Woods
1997-01-28 0:00 ` Alan Lovejoy
1997-01-23 0:00 ` Combining dynamic and static typing Don Harrison
1997-01-24 0:00 ` Erik M. Buck
[not found] ` <01bc0b21$6a8293e0$7df2ad80@wkst01.milagro.austin.tx.us>
1997-01-25 0:00 ` Nathan M. Urban
1997-01-28 0:00 ` David L. Shang
1997-01-28 0:00 ` Nathan M. Urban
1997-01-29 0:00 ` David L. Shang
1997-01-29 0:00 ` Russ McClelland
1997-01-28 0:00 ` Luther Hampton
1997-01-29 0:00 ` Marc De Scheemaecker
[not found] ` <5d0efr$meb@news.xmission.com>
1997-02-09 0:00 ` daniel damian burden
1997-01-27 0:00 ` Robert I. Eachus
1997-01-27 0:00 ` David L. Shang
1997-01-28 0:00 ` Robert C. Martin
1997-01-29 0:00 ` David L. Shang
1997-01-24 0:00 ` OO, C++, and something much better! Andy Bower
1997-01-25 0:00 ` Robert Dewar
1997-01-26 0:00 ` Eric Clayberg
1997-01-26 0:00 ` Robert Dewar
1997-01-26 0:00 ` Robert Dewar
1997-01-25 0:00 ` Robert Dewar
1997-01-26 0:00 ` William Clodius
1997-01-27 0:00 ` Robert C. Martin
1997-01-29 0:00 ` Robert Dewar
1997-01-29 0:00 ` Robert A Duff
1997-01-22 0:00 ` Don Harrison
1997-01-22 0:00 ` John Kuszewski
1997-01-23 0:00 ` Don Harrison
1997-01-23 0:00 ` Tansel Ersavas
1997-01-23 0:00 ` Travis Griggs
1997-01-24 0:00 ` Fergus Henderson
1997-01-21 0:00 ` Matthew S. Whiting
1997-01-24 0:00 ` Tansel Ersavas
1997-01-25 0:00 ` Robert A Duff
1997-01-26 0:00 ` Bob Haugen
1997-01-26 0:00 ` Robert Dewar
1997-01-26 0:00 ` TanselErsavas
1997-01-27 0:00 ` Samuel S. Shuster
1997-01-26 0:00 ` Larry J. Elmore
1997-01-26 0:00 ` Eric Clayberg
1997-01-27 0:00 ` David Hanley
1997-01-26 0:00 ` Robert Dewar
1997-01-26 0:00 ` James O'Connor
1997-01-26 0:00 ` TanselErsavas
1997-01-26 0:00 ` Robert Dewar
1997-01-27 0:00 ` Eric Clayberg
1997-01-28 0:00 ` Antoine Trux
1997-01-29 0:00 ` Robert Dewar
1997-01-25 0:00 ` Fergus Henderson
1997-01-24 0:00 ` Tansel Ersavas
1997-01-24 0:00 ` Tansel Ersavas
1997-01-25 0:00 ` Damon Feldman
1997-01-26 0:00 ` Felix Beer
1997-01-28 0:00 ` Robert C. Martin
1997-01-28 0:00 ` Matt Kennel
1997-01-29 0:00 ` Del Archer
1997-01-27 0:00 ` David Hanley
1997-01-28 0:00 ` OO, C++, and more and more useless arguments! Robert C. Martin
1997-01-28 0:00 ` OO, C++, and something much better! Al Christians
1997-01-28 0:00 ` Alan Lovejoy
1997-01-29 0:00 ` Alan Lovejoy
1997-02-21 0:00 ` Eric W. Nikitin
1997-02-21 0:00 ` Brian Rogoff
1997-02-21 0:00 ` Chris Bitmead
1997-02-24 0:00 ` Jon S Anthony
1997-02-24 0:00 ` Brian Rogoff
1997-02-25 0:00 ` Eric W. Nikitin
1997-01-21 0:00 ` Norman H. Cohen
1997-01-22 0:00 ` Eric Clayberg
1997-01-23 0:00 ` Static vs. Dynamic typing again (was Re: OO, C++, and something much better!) Richie Bielak
1997-01-23 0:00 ` Bill Gooch
1997-01-23 0:00 ` Eric Clayberg
1997-01-23 0:00 ` Richie Bielak
1997-01-23 0:00 ` Eric Clayberg
1997-01-24 0:00 ` Robb Nebbe
1997-01-25 0:00 ` OO, C++, and something much better! David N. Smith
1997-01-24 0:00 ` Static vs. Dynamic typing again (was Re: OO, C++, and something much better!) Richie Bielak
1997-01-24 0:00 ` Bob Jarvis
1997-01-24 0:00 ` Richie Bielak
1997-01-27 0:00 ` Eric W. Nikitin
1997-01-25 0:00 ` Robert A Duff
1997-01-30 0:00 ` Damon Feldman
1997-01-30 0:00 ` Fergus Henderson
1997-01-30 0:00 ` Defintion, again, was Re: Static vs. Dynamic typing again David L. Shang
1997-01-30 0:00 ` Static vs. Dynamic typing again (was Re: OO, C++, and something much better!) Robert A Duff
1997-02-09 0:00 ` Piercarlo Grandi
1997-02-10 0:00 ` Matt Kennel
1997-02-14 0:00 ` Piercarlo Grandi
1997-02-15 0:00 ` Pieter Schoenmakers
1997-02-16 0:00 ` Piercarlo Grandi
1997-01-23 0:00 ` Rolf Breuning
1997-01-27 0:00 ` Jun Nolasco
1997-01-28 0:00 ` Mark Windholtz
1997-01-28 0:00 ` Richie Bielak
1997-01-23 0:00 ` Richie Bielak
1997-01-24 0:00 ` Eirik Mangseth
[not found] ` <32E85588.1978@parcplace.com>
1997-01-26 0:00 ` Paul Perkins
1997-01-26 0:00 ` Robert A Duff
1997-01-29 0:00 ` John Gale
1997-01-30 0:00 ` Robert A Duff
1997-01-28 0:00 ` Damon Feldman
1997-01-28 0:00 ` Eric Clayberg
1997-01-28 0:00 ` Alan Knight
1997-02-08 0:00 ` Static vs. Dynamic typing again (was Re: OO, C++, and something mu Joachim Durchholz
1997-01-23 0:00 ` OO, C++, and something much better! Norman H. Cohen
1997-01-24 0:00 ` Eric Clayberg
1997-01-27 0:00 ` Norman H. Cohen
1997-01-28 0:00 ` Tim Ottinger
1997-01-29 0:00 ` Ted Dennison
1997-01-24 0:00 ` traymond
1997-01-27 0:00 ` Norman H. Cohen
1997-01-28 0:00 ` traymond
1997-01-25 0:00 ` Tansel Ersavas
1997-01-27 0:00 ` Norman H. Cohen
1997-01-27 0:00 ` Brian Rogoff
1997-01-28 0:00 ` Reflection in Ada (was: Re: OO, C++, and something much better!) Norman H. Cohen
1997-01-29 0:00 ` Eric W. Nikitin
1997-01-30 0:00 ` OO, C++, and something much better! Tim Ottinger
1997-01-23 0:00 ` James O'Connor
1997-01-29 0:00 ` Stanley R. Allen
1997-01-30 0:00 ` Robert A Duff
1997-01-27 0:00 ` Jon S Anthony
1997-01-19 0:00 ` Keith Thompson
1997-01-22 0:00 ` Don Harrison
1997-01-23 0:00 ` Robert I. Eachus
1997-01-23 0:00 ` Norman H. Cohen
1997-01-24 0:00 ` Don Harrison
1997-01-27 0:00 ` Norman H. Cohen
1997-01-29 0:00 ` "(Sub)type" -safety Don Harrison
1997-01-29 0:00 ` Jon S Anthony
1997-01-30 0:00 ` Don Harrison
1997-01-20 0:00 ` OO, C++, and something much better! Ole-Hjalmar Kristensen FOU.TD/DELAB
1997-01-24 0:00 ` Jon S Anthony
1997-01-26 0:00 ` Eric Clayberg
1997-01-27 0:00 ` Jon S Anthony
1997-01-27 0:00 ` Jon S Anthony
1997-01-27 0:00 ` Jon S Anthony
1997-01-28 0:00 ` Jon S Anthony
1997-01-29 0:00 ` Stephen J Bevan
1997-01-21 0:00 ` Joachim Durchholz
1997-01-22 0:00 ` Richard A. O'Keefe
1997-01-27 0:00 ` Robert A Duff
1997-01-27 0:00 ` Bob Jarvis
1997-01-28 0:00 ` Travis Griggs
1997-01-28 0:00 ` Russ McClelland
1997-01-28 0:00 ` Norman H. Cohen
1997-01-27 0:00 ` Robert Dewar
1997-01-27 0:00 ` Robert A Duff
1997-01-29 0:00 ` Robert Dewar
1997-01-27 0:00 ` John Woods
1997-01-22 0:00 ` Eric Clayberg
1997-01-23 0:00 ` Joachim Durchholz
1997-01-24 0:00 ` Joachim Durchholz
1997-01-29 0:00 ` Multiple Type Interfaces Joachim Durchholz
1997-01-25 0:00 ` OO, C++, and something much better! Tansel Ersavas
1997-01-25 0:00 ` James O'Connor
1997-01-26 0:00 ` Lawrence G. Mayka
1997-01-26 0:00 ` James O'Connor
1997-01-25 0:00 ` Eric Clayberg
1997-01-27 0:00 ` Norman H. Cohen
1997-02-07 0:00 ` Richard A. O'Keefe
1997-02-07 0:00 ` Alan Lovejoy
1997-02-12 0:00 ` Piercarlo Grandi
1997-02-13 0:00 ` Alan Lovejoy
[not found] ` <yf3ybcsm5ce.fsf@sabi.demon.co.uk>
1997-02-14 0:00 ` Alan Lovejoy
1997-02-16 0:00 ` Piercarlo Grandi
1997-02-16 0:00 ` Alan Lovejoy
1997-02-17 0:00 ` Piercarlo Grandi
1997-02-13 0:00 ` Richard A. O'Keefe
1997-02-13 0:00 ` Alan Lovejoy
1997-02-18 0:00 ` Richard A. O'Keefe
1997-02-19 0:00 ` William Clodius
1997-02-19 0:00 ` Mike Klein
1997-02-19 0:00 ` richard
1997-02-19 0:00 ` Mike Klein
1997-02-15 0:00 ` Jon S Anthony
1997-02-16 0:00 ` Piercarlo Grandi
1997-02-16 0:00 ` Definition of "operator" (was: OO, C++, and something much better!) Alan Lovejoy
1997-02-19 0:00 ` Dave Schaumann
1997-02-19 0:00 ` Anders Pytte
1997-02-16 0:00 ` OO, C++, and something much better! Jon S Anthony
1997-02-18 0:00 ` Richard A. O'Keefe
1997-02-20 0:00 ` Matt Kennel
1997-02-20 0:00 ` Anders Pytte
1997-02-17 0:00 ` Jon S Anthony
1997-02-19 0:00 ` Piercarlo Grandi
1997-02-19 0:00 ` Mike Klein
1997-02-17 0:00 ` Alan Lovejoy
1997-02-17 0:00 ` Definition of "operator" (was: OO, C++, and something much better!) Alan Lovejoy
1997-02-19 0:00 ` David L. Shang
1997-02-21 0:00 ` Jon S Anthony
1997-02-24 0:00 ` David L. Shang
1997-02-25 0:00 ` Jon S Anthony
1997-02-17 0:00 ` OO, C++, and something much better! Jon S Anthony
1997-02-17 0:00 ` Jon S Anthony
1997-02-19 0:00 ` Piercarlo Grandi
1997-02-18 0:00 ` Jon S Anthony
1997-02-19 0:00 ` Piercarlo Grandi
1997-02-19 0:00 ` Piercarlo Grandi
1997-02-18 0:00 ` Definition of "operator" (was: OO, C++, and something much better!) Jon S Anthony
1997-02-18 0:00 ` OO, C++, and something much better! Bernard Badger
1997-02-21 0:00 ` Jon S Anthony
1997-02-24 0:00 ` Piercarlo Grandi
1997-02-22 0:00 ` Jon S Anthony
1997-02-25 0:00 ` Richard A. O'Keefe
1997-02-22 0:00 ` Jon S Anthony
1997-02-22 0:00 ` Jon S Anthony
1997-02-22 0:00 ` Jon S Anthony
1997-02-22 0:00 ` Jon S Anthony
1997-02-23 0:00 ` Definition of "operator" (was: OO, C++, and something much better!) Richard Katz
1997-02-24 0:00 ` David L. Shang
1997-02-25 0:00 ` OO, C++, and something much better! Jon S Anthony
1997-02-27 0:00 ` Clayton Weaver
1997-02-25 0:00 ` Jon S Anthony
1997-02-25 0:00 ` Jon S Anthony
1997-02-26 0:00 ` Mike Klein
1997-02-25 0:00 ` Jon S Anthony
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