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Groups > comp.lang.c++ > #8754
| From | Ludovic Brenta <ludovic@ludovic-brenta.org> |
|---|---|
| Newsgroups | comp.lang.c++, comp.lang.ada |
| Subject | Re: Why use C++? |
| Date | 2011-08-12 23:22 +0200 |
| Organization | A noiseless patient Spider |
| Message-ID | <8739h65nr6.fsf@ludovic-brenta.org> (permalink) |
| References | (12 earlier) <j22c68$2m7$1@dont-email.me> <4e44e50a$0$7619$9b4e6d93@newsspool1.arcor-online.net> <j23fvr$gsf$1@dont-email.me> <4e4560e7$0$6546$9b4e6d93@newsspool4.arcor-online.net> <j2407a$3qv$1@dont-email.me> |
Cross-posted to 2 groups.
Jed writes: >> When have you last thought about the size of the components >> of std::string, of of a vtable? Why, then, is there a >> pressing need to think about the sizes of int types? > > You know that that was a very bad comparison. Completely invalid. On the contrary I think this comparison is perfectly valid. The language should distinguish between integers (i.e. numbers) and various kinds of machine registers. If you think you need to know the number of bits in an int, this indicates you are dealing with low-level stuff and therefore need something much more precise than "int", which specifies not only size in bits but also bit-endianness, byte-endianness, alignment, permissible operations and, if arithmetic is possible at all, overflow semantics. C conveniently ignores all these things and leaves them unspecified. With Ada, the programmer can specify most of those aspects (except, sadly, for byte-endianness). If you confuse "size of an int" for "range of permissible values for an int", then you ignore the possibility that the range might not fit at all with any size in bits, e.g. subtype Fridge_Temperature is range 250 .. 313; -- kelvins Most of the time, you do *not* need to know the size of an int; instead you need to know the size of a hardware register, field in a network protocol, etc and these are, quite often, *not* numbers. -- Ludovic Brenta. The Chief Legal Officer proactively enables our potentials.
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Why use C++? Miro <nickbergeronsemail@gmail.com> - 2011-08-06 14:00 -0700
Re: Why use C++? "Paul" <pchristor@yahoo.co.uk> - 2011-08-06 22:09 +0100
Re: Why use C++? Stuart Redmann <DerTopper@web.de> - 2011-08-10 00:39 -0700
Re: Why use C++? "Paul" <pchristor@yahoo.co.uk> - 2011-08-10 09:59 +0100
Re: Why use C++? Stuart Redmann <DerTopper@web.de> - 2011-08-10 07:09 -0700
Re: Why use C++? "Paul" <pchristor@yahoo.co.uk> - 2011-08-10 17:22 +0100
Re: Why use C++? Niklas Holsti <niklas.holsti@tidorum.invalid> - 2011-08-10 22:05 +0300
Re: Why use C++? "Randy Brukardt" <randy@rrsoftware.com> - 2011-08-10 17:37 -0500
Re: Why use C++? Ludovic Brenta <ludovic@ludovic-brenta.org> - 2011-08-11 00:49 +0200
Re: Why use C++? "Randy Brukardt" <randy@rrsoftware.com> - 2011-08-11 23:54 -0500
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-11 09:54 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-11 11:13 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-11 13:43 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-11 17:09 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-12 10:32 +0200
Re: Why use C++? Hyman Rosen <hyrosen@mail.com> - 2011-08-12 09:15 -0400
Re: Why use C++? "Randy Brukardt" <randy@rrsoftware.com> - 2011-08-12 17:09 -0500
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-12 19:20 +0200
Re: Why use C++? Ludovic Brenta <ludovic@ludovic-brenta.org> - 2011-08-12 23:22 +0200
Re: Why use C++? Ludovic Brenta <ludovic@ludovic-brenta.org> - 2011-08-16 06:06 -0700
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-13 11:37 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-13 12:27 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-15 13:38 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-13 13:02 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-12 11:21 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-12 16:30 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-12 22:05 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-13 11:15 +0200
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-13 21:29 +1200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-13 11:52 +0200
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-13 23:10 +1200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-13 13:46 +0200
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-14 08:30 +1200
Re: Why use C++? Brian Drummond <brian@shapes.demon.co.uk> - 2011-08-13 11:54 +0000
Re: Why use C++? Simon Wright <simon@pushface.org> - 2011-08-13 14:12 +0100
Re: Why use C++? Brian Drummond <brian@shapes.demon.co.uk> - 2011-08-14 11:01 +0000
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-14 08:46 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-14 08:51 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-14 09:29 +0200
Re: Why use C++? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-08-16 01:18 -0700
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-16 10:47 +0200
Re: Why use C++? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-08-16 02:52 -0700
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-16 12:39 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-16 12:23 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-16 12:58 +0200
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-16 13:44 +0200
Re: Why use C++? Bill Findlay <yaldnif.w@blueyonder.co.uk> - 2011-08-16 15:51 +0100
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-16 21:13 +0200
Re: Why use C++? Bill Findlay <yaldnif.w@blueyonder.co.uk> - 2011-08-16 20:23 +0100
Re: Why use C++? "Randy Brukardt" <randy@rrsoftware.com> - 2011-08-12 00:02 -0500
Re: Why use C++? Robert Wessel <robertwessel2@yahoo.com> - 2011-08-12 00:16 -0500
Re: Why use C++? Adam Beneschan <adam@irvine.com> - 2011-08-12 09:39 -0700
Re: Why use C++? Paavo Helde <myfirstname@osa.pri.ee> - 2011-08-12 01:51 -0500
Re: Why use C++? Georg Bauhaus <rm.dash-bauhaus@futureapps.de> - 2011-08-12 09:41 +0200
Re: Why use C++? "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2011-08-12 11:40 +0200
Re: Why use C++? Stuart Redmann <DerTopper@web.de> - 2011-08-12 04:48 -0700
Re: Why use C++? "Vinzent Hoefler" <0439279208b62c95f1880bf0f8776eeb@t-domaingrabbing.de> - 2011-08-12 15:12 +0200
Re: Why use C++? Stuart Redmann <DerTopper@web.de> - 2011-08-12 08:50 -0700
Re: Why use C++? Bill Findlay <yaldnif.w@blueyonder.co.uk> - 2011-08-12 18:02 +0100
Re: Why use C++? "Vinzent Hoefler" <0439279208b62c95f1880bf0f8776eeb@t-domaingrabbing.de> - 2011-08-15 14:59 +0200
Re: Why use C++? Louisa <louisa.hutch@gmail.com> - 2011-08-18 06:39 -0700
Re: Why use C++? Colin Paul Gloster <Colin_Paul_Gloster@ACM.org> - 2011-08-11 10:02 +0000
Re: Why use C++? Dombo <dombo@disposable.invalid> - 2011-08-11 20:20 +0200
Re: Why use C++? Lynn McGuire <lmc@winsim.com> - 2011-08-11 14:50 -0500
Re: Why use C++? Dombo <dombo@disposable.invalid> - 2011-08-12 19:22 +0200
Re: Why use C++? Miro <nickbergeronsemail@gmail.com> - 2011-08-13 08:37 -0700
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-14 08:38 +1200
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-14 10:41 +1200
Re: Why use C++? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-08-14 07:26 +0000
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-14 20:18 +1200
Re: Why use C++? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-08-14 09:00 +0000
Re: Why use C++? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-08-16 02:10 -0700
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-16 21:25 +1200
Re: Why use C++? Nick Keighley <nick_keighley_nospam@hotmail.com> - 2011-08-16 02:54 -0700
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-16 22:04 +1200
Re: Why use C++? Ian Collins <ian-news@hotmail.com> - 2011-08-07 09:10 +1200
Re: Why use C++? "Paul" <pchristor@yahoo.co.uk> - 2011-08-06 22:13 +0100
Re: Why use C++? Juha Nieminen <nospam@thanks.invalid> - 2011-08-07 09:09 +0000
Re: Why use C++? "Paul" <pchristor@yahoo.co.uk> - 2011-08-07 12:37 +0100
Re: Why use C++? Juha Nieminen <nospam@thanks.invalid> - 2011-08-07 14:52 +0000
Re: Why use C++? "Paul" <pchristor@yahoo.co.uk> - 2011-08-07 20:21 +0100
Re: Why use C++? Lynn McGuire <lmc@winsim.com> - 2011-08-06 16:29 -0500
Re: Why use C++? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-08-07 09:35 +0000
Re: Why use C++? "crea" <no@invalid.com> - 2011-08-07 13:40 +0100
Re: Why use C++? Dombo <dombo@disposable.invalid> - 2011-08-07 15:12 +0200
Re: Why use C++? Juha Nieminen <nospam@thanks.invalid> - 2011-08-07 14:55 +0000
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