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From: Ed Avis <epa98@doc.ic.ac.uk>
Subject: Re: GPL and "free" software
Date: 1999/05/02
Date: 1999-05-02T09:17:24+00:00	[thread overview]
Message-ID: <372C1824.1417502F@doc.ic.ac.uk> (raw)
In-Reply-To: 925572182snz@vision25.demon.co.uk

Phil Hunt wrote:

>>Can't you write a template class in C++, and put
>>it in a dynamically linked library?
>
>I would be surprised if this is the case. However instantiations of
>templates can be put in a DLL or .so.

What do you mean by 'instantiations of templates'?

Surely if I write a class like this (pseudocode, I don't know Ada and
my C++ is rusty):

class List
  let T be any class
  method add(T)
  method get_first_item : returns T
  method count_items : returns Int

then there will only one copy of the executable code in the object
file.  If the program instantiates a List of Int, then the code for
List is called and passed pointers (or references) to Ints.  If the
program wants a List of Char, then the same object code can be used,
being passed pointers to Chars.

Or have I got it horribly wrong?

-- 
Ed Avis
Advertise here! epa98@doc.ic.ac.uk




  reply	other threads:[~1999-05-02  0:00 UTC|newest]

Thread overview: 162+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-04-20  0:00 air traffic control software Terry J. Westley
1999-04-21  0:00 ` Kevin Rigotti
1999-04-21  0:00   ` Robert Dewar
1999-04-21  0:00     ` GPL and "free" software (was: air traffic control software) Terry J. Westley
1999-04-21  0:00       ` dennison
1999-04-21  0:00       ` bill
1999-04-23  0:00         ` Robert Dewar
1999-04-23  0:00           ` Larry Kilgallen
1999-04-23  0:00             ` Robert Dewar
1999-04-23  0:00           ` Tom Moran
1999-04-24  0:00             ` Florian Weimer
1999-04-25  0:00               ` Robert Dewar
1999-04-26  0:00                 ` GPL and "free" software Nick Roberts
1999-04-26  0:00                   ` Phil Hunt
1999-04-27  0:00                     ` Robert Dewar
1999-04-27  0:00                       ` Ronald Cole
1999-04-26  0:00                   ` Robert Dewar
1999-04-26  0:00                   ` Florian Weimer
1999-04-26  0:00                   ` Tim Smith
1999-04-26  0:00                   ` Paul Hughett
1999-04-26  0:00                     ` Robert Dewar
1999-04-26  0:00                       ` Paul Hughett
1999-04-26  0:00                         ` Robert Dewar
1999-04-27  0:00                           ` Lynn Winebarger
1999-04-26  0:00                             ` Tim Smith
1999-04-27  0:00                             ` Barry Margolin
1999-04-27  0:00                               ` Lynn Winebarger
1999-04-27  0:00                           ` Paul Hughett
1999-04-27  0:00                             ` Barry Margolin
1999-04-27  0:00                               ` Paul Hughett
1999-04-27  0:00                                 ` Joshua E. Rodd
     [not found]                                   ` <7g5qgg$n7t@www.inetnow.net>
1999-04-28  0:00                                     ` Joshua E. Rodd
     [not found]                                       ` <7g7ro3$q91@www.inetnow.net>
1999-04-28  0:00                                         ` Lynn Winebarger
1999-04-29  0:00                                           ` Robert Dewar
1999-04-29  0:00                                             ` Lynn Winebarger
1999-04-29  0:00                                               ` Aidan Skinner
     [not found]                                             ` <7g8ip8$skl@www.inetnow.net>
1999-04-29  0:00                                               ` Barry Margolin
1999-04-29  0:00                                                 ` [Offtopic for cl.ada] " Joshua E. Rodd
1999-04-30  0:00                                                 ` Paul Hughett
1999-04-30  0:00                                                   ` Robert Dewar
1999-05-08  0:00                                           ` dewarr
1999-04-28  0:00                                         ` Joshua E. Rodd
1999-04-28  0:00                                       ` Robert Dewar
1999-04-28  0:00                                         ` Joshua E. Rodd
1999-04-29  0:00                                           ` Robert Dewar
1999-04-29  0:00                                             ` David Starner
1999-04-29  0:00                                               ` Robert Dewar
1999-04-29  0:00                                             ` Lynn Winebarger
1999-04-29  0:00                                               ` Joshua E. Rodd
1999-04-30  0:00                                                 ` Lynn Winebarger
1999-05-05  0:00                                               ` Richard E. Hawkins Esq.
1999-05-05  0:00                                                 ` Robert Dewar
1999-05-05  0:00                                                   ` Richard E. Hawkins Esq.
1999-05-06  0:00                                                     ` Robert Dewar
1999-05-06  0:00                                                       ` Barry Margolin
1999-05-06  0:00                                                         ` Robert Dewar
1999-05-06  0:00                                                         ` Robert Dewar
1999-05-06  0:00                                                           ` Barry Margolin
1999-05-06  0:00                                                             ` Robert Dewar
1999-05-06  0:00                                                               ` Barry Margolin
1999-05-06  0:00                                                                 ` Robert Dewar
1999-05-06  0:00                                                                   ` Roger Espel Llima
1999-05-07  0:00                                                                     ` Robert Dewar
1999-05-07  0:00                                                                       ` dennison
1999-05-07  0:00                                                                       ` Barry Margolin
     [not found]                                             ` <7gdv6m$1fid$1@Mercury.mcs.net>
1999-05-03  0:00                                               ` [O/T 4 cla] " Joshua E. Rodd
     [not found]                                                 ` <7gkmt5$e8t@www.inetnow.net>
1999-05-03  0:00                                                   ` Joshua E. Rodd
     [not found]                                                     ` <7gnb7u$hlu@www.inetnow.net>
1999-05-04  0:00                                                       ` Leslie Mikesell
1999-05-05  0:00                                                         ` Robert Dewar
1999-05-05  0:00                                                           ` Leslie Mikesell
1999-05-06  0:00                                                             ` Robert Dewar
1999-05-08  0:00                                                               ` Leslie Mikesell
1999-05-08  0:00                                                                 ` Robert Dewar
1999-05-10  0:00                                                                   ` Leslie Mikesell
1999-05-11  0:00                                                                     ` Robert Dewar
1999-05-10  0:00                                                                       ` Leslie Mikesell
1999-05-11  0:00                                                                     ` Robert Dewar
1999-05-10  0:00                                                                       ` Leslie Mikesell
1999-05-11  0:00                                                                         ` Robert Dewar
1999-05-11  0:00                                                                           ` Leslie Mikesell
1999-05-12  0:00                                                                             ` Robert Dewar
1999-05-04  0:00                                                   ` James Youngman
1999-05-06  0:00                                                     ` Robert Dewar
1999-05-04  0:00                                                 ` James Youngman
1999-05-06  0:00                                                   ` Robert Dewar
1999-05-06  0:00                                             ` Robert A Duff
1999-05-06  0:00                                               ` Robert Dewar
1999-05-07  0:00                                                 ` Joshua E. Rodd
1999-05-08  0:00                                                   ` dewarr
1999-05-18  0:00                                                     ` Joshua E. Rodd
1999-04-28  0:00                                 ` Barry Margolin
1999-04-28  0:00                                   ` Lynn Winebarger
1999-04-28  0:00                                     ` Samuel Mize
1999-04-29  0:00                                       ` Robert Dewar
1999-04-28  0:00                                     ` Samuel Mize
1999-04-28  0:00                                     ` Joshua E. Rodd
1999-04-29  0:00                                       ` Robert Dewar
1999-04-29  0:00                                         ` Robert A Duff
1999-04-29  0:00                                           ` Barry Margolin
1999-04-29  0:00                                     ` Fraser Wilson
1999-04-29  0:00                                       ` Ed Avis
1999-04-29  0:00                                         ` Barry Margolin
1999-04-29  0:00                                         ` Robert Dewar
1999-04-30  0:00                                           ` Ed Avis
1999-04-29  0:00                                         ` David Starner
1999-04-29  0:00                                           ` Ed Avis
1999-04-29  0:00                                             ` Robert Dewar
1999-04-29  0:00                                             ` David Starner
1999-04-30  0:00                                               ` Ed Avis
1999-04-30  0:00                                                 ` Barry Margolin
1999-04-30  0:00                                                   ` Ed Avis
     [not found]                                                     ` <R5qW2.242$jw4.22063@burlma1-snr2>
     [not found]                                                       ` <372ADEED.D907754@doc.ic.ac.uk>
1999-05-03  0:00                                                         ` Joshua E. Rodd
1999-05-04  0:00                                                           ` Ed Avis
1999-05-04  0:00                                                             ` Barry Margolin
1999-05-04  0:00                                                               ` Ed Avis
1999-05-04  0:00                                                                 ` Barry Margolin
1999-05-08  0:00                                                                   ` dewarr
1999-05-04  0:00                                                                 ` Peter Seebach
1999-05-04  0:00                                                         ` Alan Braggins
1999-05-01  0:00                                                 ` Phil Hunt
1999-05-02  0:00                                                   ` Ed Avis [this message]
1999-05-02  0:00                                                     ` Phil Hunt
1999-05-02  0:00                                                       ` Ed Avis
1999-05-03  0:00                                                         ` dennison
1999-05-02  0:00                                                     ` Ole-Hjalmar Kristensen
1999-05-02  0:00                                                   ` Andy Isaacson
1999-05-03  0:00                                                     ` Robert Dewar
1999-04-29  0:00                                             ` Joshua E. Rodd
1999-04-29  0:00                                     ` Paul Hughett
1999-04-30  0:00                                     ` spblunt
1999-04-30  0:00                                       ` David Kastrup
1999-04-27  0:00                             ` David Kastrup
1999-04-27  0:00                           ` spblunt
1999-04-27  0:00                             ` Robert Dewar
1999-04-26  0:00                   ` spblunt
1999-04-26  0:00                     ` Tim Smith
1999-04-26  0:00                       ` Kenneth P. Turvey
1999-04-27  0:00                         ` Robert Dewar
1999-04-27  0:00                           ` Barry Margolin
1999-05-02  0:00                             ` Mitch Blevins
1999-05-02  0:00                               ` Sam Holden
1999-05-03  0:00                                 ` Barry Margolin
1999-04-26  0:00                       ` Robert Dewar
1999-04-27  0:00                       ` Phil Hunt
1999-04-27  0:00                         ` David Kastrup
1999-04-27  0:00                           ` Robert Dewar
1999-04-27  0:00                             ` Lynn Winebarger
1999-05-05  0:00                             ` Richard E. Hawkins Esq.
1999-04-27  0:00                           ` Lynn Winebarger
1999-04-26  0:00                     ` Robert Dewar
1999-04-26  0:00                     ` Barry Margolin
1999-04-26  0:00                   ` Robert Dewar
1999-04-23  0:00         ` GPL and "free" software (was: air traffic control software) Robert Dewar
     [not found] ` <DXqW2.244$jw4.22256@burlma1-snr2>
     [not found]   ` <7gdln1$vna$1@jetsam.uits.indiana.edu>
     [not found]     ` <372ADFBD.4F4C241B@doc.ic.ac.uk>
1999-05-01  0:00       ` GPL and "free" software Lynn Winebarger
     [not found]       ` <m2zp3pat3q.fsf@mailhost.neuroinformatik.ruhr-uni-bochum.de>
1999-05-03  0:00         ` Joshua E. Rodd
1999-05-04  0:00           ` Ed Avis
1999-05-04  0:00           ` Larry Kilgallen
     [not found]       ` <7gff2f$8o2@www.inetnow.net>
1999-05-01  0:00         ` Ed Avis
1999-05-03  0:00         ` Joshua E. Rodd
1999-05-03  0:00     ` Barry Margolin
     [not found] ` <7gdd9e$36l$1@flotsam.uits.indiana.edu>
     [not found]   ` <372ADF48.B3C88507@doc.ic.ac.uk>
1999-05-04  0:00     ` Nick Roberts
1999-05-07  0:00       ` Robert Dewar
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