From: Bruce Hoult <bruce@hoult.org>
Subject: Re: True faiths ( was Re: The true faith )
Date: Wed, 23 Jan 2002 10:59:48 +1300
Date: 2002-01-23T10:59:48+13:00 [thread overview]
Message-ID: <bruce-28A01B.10594823012002@news.paradise.net.nz> (raw)
In-Reply-To: 3C4D9B03.60803@mail.com
In article <3C4D9B03.60803@mail.com>, Hyman Rosen <hyrosen@mail.com>
wrote:
> Simon Willcocks wrote:
>
> > I think I'll try to stick to languages with garbage collection.
>
>
> But garbage collection has nothing to do with this problem!
>
> The problem is handling an assignment when the type contains
> bases and subobjects that must be copied, and doing such
> copying could cause exceptions. You must arrange for the
> copying to succeed, or else leave the destination object in
> a consistent state, as well as propogate exceptions back to
> the caller.
Garbage collection has a *lot* to do with this problem!
A large proportion of assignments in languages such as C++ are done
merely in order to resolve the question of who owns an object and who is
responsible for eventually deleting it.
With GC available, objects are seldom copied with pointers to them being
passed around instead. You don't care who "owns" the object, because it
just magically goes away when all the pointers to it get forgotten.
-- Bruce
next prev parent reply other threads:[~2002-01-22 21:59 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <B85AB00A.3603%verec@mac.com>
[not found] ` <%njZ7.279$iR.150960@news3.calgary.shaw.ca>
[not found] ` <B85BD264.370E%verec@mac.com>
[not found] ` <n7ybsg9lq8y.fsf@panix1.panix.com>
[not found] ` <3c36fbc5_10@news.newsgroups.com>
[not found] ` <gat-0501022256350001@192.168.1.50>
[not found] ` <4idg3u40ermnp682n6igc5gudp7hajkea9@4ax.com>
[not found] ` <gat-1001021155210001@eglaptop.jpl.nasa.gov>
[not found] ` <bruce-6C0AC5.10391411012002@news.paradise.net.nz>
[not found] ` <gat-1001021515510001@192.168.1.50>
[not found] ` <76be8851.0201101909.9db0718@posting.google.com>
[not found] ` <gat-1101020950400001@eglaptop.jpl.nasa.gov>
2002-01-11 23:46 ` True faiths ( was Re: The true faith ) israel r t
2002-01-12 0:38 ` Steven T Abell
2002-01-13 12:20 ` Kevin McFarlane
2002-01-13 18:52 ` Erik Naggum
2002-01-14 8:12 ` Espen Vestre
2002-01-14 10:40 ` israel r t
2002-01-16 6:42 ` Patrick Doyle
2002-01-16 8:00 ` israel r t
2002-01-16 8:55 ` Espen Vestre
2002-01-20 0:55 ` Mad Hamish
2002-01-20 1:18 ` Bruce Hoult
2002-02-13 16:31 ` Tom Hawker
2002-02-13 17:51 ` Larry Kilgallen
2002-02-13 23:28 ` Peter Gummer
2002-02-14 3:10 ` Greg C
2002-02-14 1:56 ` Hartmann Schaffer
2002-02-14 9:59 ` Barry Watson
2002-01-16 8:00 ` " Do computers because it pays well" ( was Re: True faiths ) israel r t
2002-01-14 11:00 ` True faiths ( was Re: The true faith ) Immanuel Litzroth
2002-01-18 15:19 ` Bob Bane
2002-01-18 17:44 ` René
2002-01-18 18:04 ` Hyman Rosen
2002-01-18 23:22 ` Richard Riehle
2002-01-18 23:53 ` Matthew Heaney
2002-01-20 5:39 ` Hyman Rosen
2002-01-20 5:59 ` Kaz Kylheku
2002-01-20 15:15 ` Software Scavenger
2002-01-21 1:42 ` Richard Riehle
2002-01-21 9:52 ` Hyman Rosen
2002-01-21 16:38 ` Richard Riehle
2002-01-21 20:30 ` Kaz Kylheku
2002-01-22 5:35 ` Raffael Cavallaro
2002-01-18 18:44 ` Simon Willcocks
2002-01-22 17:01 ` Hyman Rosen
2002-01-22 21:59 ` Bruce Hoult [this message]
2002-01-22 22:08 ` Hyman Rosen
2002-01-22 23:22 ` Kenny Tilton
2002-01-23 21:12 ` Hyman Rosen
2002-01-23 22:24 ` Tim Bradshaw
2002-01-24 0:15 ` Kenny Tilton
2002-01-24 8:14 ` Hyman Rosen
2002-01-24 16:50 ` Canconical C++ assignment (was Re: True faiths ...) Ray Blaak
2002-01-23 2:26 ` True faiths ( was Re: The true faith ) Bruce Hoult
2002-01-23 17:49 ` Richard Riehle
2002-01-22 22:09 ` Jim Rogers
2002-01-22 22:54 ` Kaz Kylheku
2002-01-22 23:47 ` Jim Rogers
2002-01-23 0:08 ` Ada SDL Eric Merritt
2002-01-23 1:39 ` Rajat Datta
2002-01-23 10:52 ` Preben Randhol
2002-01-23 13:59 ` Eric Merritt
2002-01-23 16:48 ` Preben Randhol
2002-01-23 16:01 ` True faiths ( was Re: The true faith ) Greg C
2002-01-26 0:40 ` AG
2002-02-11 7:18 ` David Combs
2002-02-11 17:50 ` Ray Blaak
2002-02-11 20:13 ` Kaz Kylheku
2002-02-13 21:17 ` Tom Hawker
2002-01-23 17:45 ` Georg Bauhaus
2002-01-18 19:36 ` Bruce Hoult
2002-01-18 19:57 ` Kaz Kylheku
2002-01-18 19:58 ` Marc Spitzer
2002-01-18 20:11 ` Ed Falis
2002-01-18 22:14 ` Kenny Tilton
2002-01-19 2:46 ` Thomas F. Burdick
2002-01-19 7:32 ` av1474
2002-02-13 23:12 ` Tom Hawker
2002-01-14 11:42 ` Kevin McFarlane
2002-01-12 2:31 ` Victor B. Putz
2002-01-12 3:56 ` Kenny Tilton
2002-01-12 5:49 ` israel r t
2002-01-12 6:04 ` Thaddeus L Olczyk
2002-01-12 8:42 ` Friedrich Dominicus
2002-01-12 15:44 ` Andreas Bogk
2002-01-14 13:52 ` Georg Bauhaus
2002-01-12 19:39 ` Doug Hockin
2002-01-12 19:49 ` Thaddeus L Olczyk
2002-01-12 20:14 ` Kenny Tilton
2002-01-12 22:45 ` Fernando Rodr�guez
2002-01-13 1:03 ` Thomas F. Burdick
2002-01-13 5:24 ` Kenny Tilton
2002-01-12 15:58 ` Preben Randhol
2002-01-12 16:18 ` Nils Goesche
2002-01-12 17:03 ` Thomas F. Burdick
2002-01-12 17:56 ` Christopher Browne
2002-01-13 0:52 ` Thomas F. Burdick
2002-01-13 18:17 ` Nils Goesche
2002-01-13 19:04 ` Thomas F. Burdick
2002-01-13 19:26 ` James A. Robertson
2002-01-13 20:40 ` Nils Goesche
2002-01-13 20:43 ` Andreas Bogk
2002-01-13 19:05 ` Preben Randhol
2002-01-13 19:20 ` Preben Randhol
2002-01-16 12:00 ` Christian Lynbech
[not found] ` <9jtu3u8cq92b05j47uat3412tok6hq <3C409A34.7DE61ACB@nyc.rr.com>
2002-01-13 15:23 ` Patrick Doyle
2002-01-13 16:29 ` Dr. Edmund Weitz
[not found] ` <9jtu3u8cq92b05j47uat3412tok6hq <i1t28.632$XG4.38637@news2.calgary.shaw.ca>
2002-01-22 14:25 ` Copying semantics molehill (was Re: True faiths) Patrick Doyle
2002-01-22 15:47 ` Steven T Abell
2002-01-26 17:32 ` Patrick Doyle
2002-01-22 18:00 ` Kaz Kylheku
2002-01-26 17:37 ` Patrick Doyle
2002-01-28 3:08 ` Robert Dewar
2002-01-28 18:47 ` Patrick Doyle
2002-01-23 1:43 ` True faiths ( was Re: The true faith ) Larry Kilgallen
[not found] ` <9jtu3u8cq92b05j47uOrganization: LJK Software <FfppBdBcNxcL@eisner.encompasserve.org>
2002-01-23 2:04 ` Jim Rogers
2002-01-23 17:02 ` Darren New
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