Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c++ > #13604

Re: Oozing poison

Show key headers only | View raw

On 01/27/12 09:55 AM, Scott Lurndal wrote:
> Cholo Lennon<chololennon@hotmail.com>  writes:
>> On 26/01/2012 16:24, Scott Lurndal wrote:
>>> The readability of C++ seems to get worse with each new version of the
>>> standard.   Once the<XXX>   elements (static/dynamic casts, templates) were added
>>> to the language, it became worse than perl for readability.
>>
>> Really? Do you think C++ cast operators go against readability? For me
>> is the opposite: At glance, for example, they give you more information
>> than the traditional C cast and, as a result, they are (IMHO) more readable.
>>
>
> Buenas,
>
>     I think they may provide better _maintainability_ at the expense of _readability_.
>
>     It may also be that for someone coming from a C background (starting in 1978),
> the dynamic/static cast syntax just looks alien and out of place.
>
>     Templates and exceptions on the other hand, have a distinct impact on code size
> (thus icache footprint, thus performance).

The only performance impact I have ever measured from the use of 
exceptions is improvement.  I have been testing compilers since the mid 
90s and I have only found one compiler/platform (that compiler refused 
to inline any function that could throw) where exceptions had a 
detrimental impact on performance.

In overall performance terms, templates are no worse and often a 
significant improvement over the direct C equivalent (macros) because 
they aren't necessary inlined.  They can also provide significant 
performance improvements over another C alternative, the use of void* 
and function pointers (sorting being the classic example).

Yes you can end up with multiple instances of class methods, but that is 
the price you pay for type safety.  Anyway, what proportion of a decent 
sized project would that represent?  For containers of pointers one can 
easily use inline wrappers round a container of void* to avoid bloat 
while retaining type safety.  In most code I have seen, containers of T* 
are more numerous than containers of T

Thus with contemporary tools, the twin myths of exception performance 
and template code bloat are just that: myths.

-- 
Ian Collins

Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Oozing poison AD <isquat@gmail.com> - 2012-01-10 04:35 -0800
  Re: Oozing poison Leigh Johnston <leigh@i42.co.uk> - 2012-01-10 15:19 +0000
    Re: Oozing poison AD <isquat@gmail.com> - 2012-01-11 00:43 -0800
      Re: Oozing poison "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2012-01-11 10:01 +0100
        Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-11 22:09 +1300
          Re: Oozing poison AD <isquat@gmail.com> - 2012-01-11 01:42 -0800
            Re: Oozing poison Leigh Johnston <leigh@i42.co.uk> - 2012-01-11 13:36 +0000
              Re: Oozing poison John Bokma <john@castleamber.com> - 2012-01-11 10:08 -0600
              Re: Oozing poison AD <isquat@gmail.com> - 2012-01-12 06:08 -0800
                Re: Oozing poison Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 14:13 +0000
                Re: Oozing poison AD <isquat@gmail.com> - 2012-01-17 02:08 -0800
                Re: Oozing poison Henrik Faber <hfaber@invalid.net> - 2012-01-17 12:50 +0100
                Re: Oozing poison Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-13 02:18 -0800
                Re: Oozing poison AD <isquat@gmail.com> - 2012-01-17 02:24 -0800
      Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-11 16:50 +0000
        Re: Oozing poison AD <isquat@gmail.com> - 2012-01-12 06:04 -0800
          Re: Oozing poison Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-12 10:13 -0500
            Re: Oozing poison AD <isquat@gmail.com> - 2012-01-17 02:19 -0800
              Re: Oozing poison Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-17 08:04 -0500
              Re: Oozing poison Miles Bader <miles@gnu.org> - 2012-01-18 13:51 +0900
                Re: Oozing poison AD <isquat@gmail.com> - 2012-01-21 04:40 -0800
                Re: Oozing poison Quint Rankid <qbr567@gmail.com> - 2012-01-21 09:05 -0800
                Re: Oozing poison Wil Evers <bouncer@dev.null> - 2012-01-21 18:52 +0000
                Re: Oozing poison Quint Rankid <qbr567@gmail.com> - 2012-01-21 11:33 -0800
                Re: Oozing poison AD <isquat@gmail.com> - 2012-01-25 02:23 -0800
                Re: Oozing poison AD <isquat@gmail.com> - 2012-01-25 02:07 -0800
                Re: Oozing poison Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-25 07:59 -0500
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-26 07:54 +1300
                Re: Oozing poison Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2012-01-21 22:43 -0500
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-22 21:05 +1300
                Re: Oozing poison Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2012-01-22 18:21 -0500
                Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-23 15:55 +0000
                Re: Oozing poison gwowen <gwowen@gmail.com> - 2012-01-23 08:37 -0800
                Re: Oozing poison Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2012-01-24 22:48 -0500
                Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-25 19:44 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-26 08:56 +1300
                Re: Oozing poison 88888 Dihedral <dihedral88888@googlemail.com> - 2012-01-25 23:04 -0800
                Re: Oozing poison Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-26 03:24 -0800
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-26 19:13 +0000
                Re: Oozing poison Brian Drummond <brian@shapes.demon.co.uk> - 2012-01-27 00:12 +0000
                Re: Oozing poison "MikeWhy" <boat042-nospam@yahoo.com> - 2012-01-26 22:44 -0600
                Re: Oozing poison 88888 Dihedral <dihedral88888@googlemail.com> - 2012-01-28 14:25 -0800
                Re: Oozing poison Robert Miles <milesrf@Usenet-News.net> - 2012-02-26 22:16 -0600
              Re: Oozing poison "Gernot Frisch" <me@privacy.net> - 2012-01-24 18:21 +0100
                Re: Oozing poison Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-24 12:41 -0500
                Re: Oozing poison Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-26 03:25 -0800
              Re: Oozing poison Rui Maciel <rui.maciel@gmail.com> - 2012-01-25 19:44 +0000
                Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-26 09:44 +0000
                Re: Oozing poison Rui Maciel <rui.maciel@gmail.com> - 2012-01-26 10:36 +0000
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-26 19:18 +0000
                Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-26 20:42 +0000
                Re: Oozing poison Juha Nieminen <nospam@thanks.invalid> - 2012-01-26 16:30 +0000
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-26 19:24 +0000
                Re: Oozing poison Cholo Lennon <chololennon@hotmail.com> - 2012-01-26 17:13 -0300
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-26 20:55 +0000
                Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-26 22:08 +0000
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-27 00:32 +0000
                Re: Oozing poison Dombo <dombo@disposable.invalid> - 2012-01-28 12:59 +0100
                Re: Oozing poison Cholo Lennon <chololennon@hotmail.com> - 2012-01-27 18:28 -0300
                Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-29 18:02 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-27 20:18 +1300
                Re: Oozing poison Miles Bader <miles@gnu.org> - 2012-01-27 18:09 +0900
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-27 20:29 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-28 10:06 +1300
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-27 21:26 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-28 12:22 +1300
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-28 04:18 +0000
                Re: Oozing poison Miles Bader <miles@gnu.org> - 2012-01-28 13:44 +0900
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-28 21:31 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-29 11:32 +1300
                Re: Oozing poison 88888 Dihedral <dihedral88888@googlemail.com> - 2012-01-28 14:55 -0800
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-29 11:59 +1300
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-30 17:08 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-28 18:06 +1300
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-28 22:49 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-29 12:22 +1300
                Re: Oozing poison scott@slp53.sl.home (Scott Lurndal) - 2012-01-27 20:16 +0000
                Re: Oozing poison Ian Collins <ian-news@hotmail.com> - 2012-01-28 10:01 +1300
                Re: Oozing poison Juha Nieminen <nospam@thanks.invalid> - 2012-01-28 16:00 +0000
  Re: Oozing poison Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-10 21:42 +0000
    Re: Oozing poison AD <isquat@gmail.com> - 2012-01-17 02:31 -0800

csiph-web