Re: On generally accepted terminology for pointers and arrays

From	Ian Collins <ian-news@hotmail.com>
Newsgroups	comp.lang.c++
Subject	Re: On generally accepted terminology for pointers and arrays
Date	2011-04-12 20:51 +1200
Message-ID	<90ii49Fhg6U12@mid.individual.net> (permalink)
References	<io0bnr$dph$1@dont-email.me> <57d23fe9-b1e2-483c-a2da-f327d8025503@v10g2000yqn.googlegroups.com> <a647fdef-0694-4cd8-beba-14fb60079905@f11g2000vbx.googlegroups.com>

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On 04/12/11 08:39 PM, Goran wrote:
> On Apr 12, 8:24 am, gwowen<gwo...@gmail.com>  wrote:
>> Speaking personally, I find it helpful to think of pointers as
>> modelling two distinct concepts.
>>
>> i) A nullable, reseatable reference to a single (possibly polymorphic)
>> object.
>> I can use it to access the members of the base type to which it has
>> been declared to point.  Trying anything else is fraught with danger
>> (even obtaiining a copy of the object (due to slicing)).
>>
>> ii) A bi-directional iterator into a contiguous collection of non-
>> polymorphic objects.
>> Subject to staying within the bounds (or just off the end) I can
>> increment, decrement to iterate over the collection, access members or
>> otherwise manipulate however I like. Using an array variable name as a
>> value just obtains such an iterator for the start of the array. Sadly,
>> you don't get the equivalent of an std::vector.end() member function.
>>
>> As a useful rule of thumb: if you mix these concepts up, bad things
>> will often happen. If you don't everything will be fine.
>
> +1 for all of that. i) is important for C++, ii) for C.

ii) has an important use for C++ as well: using standard algorithms with 
arrays.

-- 
Ian Collins

Thread

On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 04:00 +0200
  Re: On generally accepted terminology for pointers and arrays Pavel <pauldontspamtolk@removeyourself.dontspam.yahoo> - 2011-04-12 00:13 -0400
  Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 05:17 +0100
    Re: On generally accepted terminology for pointers and arrays Leigh Johnston <leigh@i42.co.uk> - 2011-04-12 14:02 +0100
      Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 14:10 +0100
        Re: On generally accepted terminology for pointers and arrays Leigh Johnston <leigh@i42.co.uk> - 2011-04-12 14:49 +0100
      Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-12 10:05 -0400
  Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-12 01:11 -0400
  Re: On generally accepted terminology for pointers and arrays gwowen <gwowen@gmail.com> - 2011-04-11 23:24 -0700
    Re: On generally accepted terminology for pointers and arrays gwowen <gwowen@gmail.com> - 2011-04-12 00:16 -0700
      Re: On generally accepted terminology for pointers and arrays Leigh Johnston <leigh@i42.co.uk> - 2011-04-12 13:53 +0100
        Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 14:08 +0100
      Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 14:05 +0100
        Re: On generally accepted terminology for pointers and arrays Leigh Johnston <leigh@i42.co.uk> - 2011-04-12 14:48 +0100
          Re: On generally accepted terminology for pointers and arrays Ian Collins <ian-news@hotmail.com> - 2011-04-13 07:53 +1200
      Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 22:14 +0200
        Re: On generally accepted terminology for pointers and arrays Öö Tiib <ootiib@hot.ee> - 2011-04-12 15:39 -0700
    Re: On generally accepted terminology for pointers and arrays Goran <goran.pusic@gmail.com> - 2011-04-12 01:39 -0700
      Re: On generally accepted terminology for pointers and arrays Ian Collins <ian-news@hotmail.com> - 2011-04-12 20:51 +1200
    Re: On generally accepted terminology for pointers and arrays Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-04-12 21:51 +0000
  Re: On generally accepted terminology for pointers and arrays cpp4ever <n2xssvv.g02gfr12930@ntlworld.com> - 2011-04-12 09:59 +0100
    Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 16:25 +0200
      Re: On generally accepted terminology for pointers and arrays cpp4ever <n2xssvv.g02gfr12930@ntlworld.com> - 2011-04-12 16:07 +0100
        Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 17:32 +0200
          Re: On generally accepted terminology for pointers and arrays cpp4ever <n2xssvv.g02gfr12930@ntlworld.com> - 2011-04-12 16:53 +0100
            Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 18:16 +0200
              Re: On generally accepted terminology for pointers and arrays cpp4ever <n2xssvv.g02gfr12930@ntlworld.com> - 2011-04-12 17:39 +0100
                Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 19:32 +0200
                Re: DILLIGAF cpp4ever <n2xssvv.g02gfr12930@ntlworld.com> - 2011-04-12 19:05 +0100
                Re: DILLIGAF Peter Remmers <p.remmers@expires-2011-04-30.arcornews.de> - 2011-04-12 20:36 +0200
                Re: DILLIGAF cpp4ever <n2xssvv.g02gfr12930@ntlworld.com> - 2011-04-12 20:47 +0100
                Re: DILLIGAF gwowen <gwowen@gmail.com> - 2011-04-12 14:48 -0700
                Re: DILLIGAF Öö Tiib <ootiib@hot.ee> - 2011-04-12 15:16 -0700
    Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 17:48 +0100
  Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-12 09:37 -0700
    Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 18:34 +0100
    Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 19:38 +0200
      Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-12 11:00 -0700
        Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 20:03 +0200
          Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-12 11:06 -0700
            Re: On generally accepted terminology for pointers and arrays Peter Remmers <p.remmers@expires-2011-04-30.arcornews.de> - 2011-04-12 20:26 +0200
              Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-12 11:33 -0700
                Re: On generally accepted terminology for pointers and arrays Peter Remmers <p.remmers@expires-2011-04-30.arcornews.de> - 2011-04-12 20:55 +0200
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 20:14 +0100
                Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-12 12:47 -0700
                Re: On generally accepted terminology for pointers and arrays Peter Remmers <p.remmers@expires-2011-04-30.arcornews.de> - 2011-04-12 22:40 +0200
      Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-12 14:15 -0400
        Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-12 20:52 +0200
          Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 20:23 +0100
          Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-12 16:01 -0400
            Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-12 13:46 -0700
              Re: On generally accepted terminology for pointers and arrays Öö Tiib <ootiib@hot.ee> - 2011-04-12 19:49 -0700
                Re: On generally accepted terminology for pointers and arrays hanukas <jukka@liimatta.org> - 2011-04-13 00:06 -0700
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 04:14 -0400
                Re: On generally accepted terminology for pointers and arrays Öö Tiib <ootiib@hot.ee> - 2011-04-13 07:53 -0700
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 09:52 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 05:20 -0400
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 10:31 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 07:04 -0400
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 12:35 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 07:41 -0400
                Re: On generally accepted terminology for pointers and arrays Ian Collins <ian-news@hotmail.com> - 2011-04-14 07:47 +1200
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-14 11:44 +0100
                Re: On generally accepted terminology for pointers and arrays "io_x" <a@b.c.invalid> - 2011-04-13 18:41 +0200
                Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-13 09:35 -0700
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 20:17 +0100
              Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 04:33 -0400
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 04:35 -0400
            Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 01:19 +0100
              Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 04:01 -0400
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 04:20 -0400
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 09:56 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 05:24 -0400
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 10:34 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 07:07 -0400
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 12:36 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 07:43 -0400
                Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-13 13:18 +0100
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 08:30 -0400
            Re: On generally accepted terminology for pointers and arrays "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-04-13 15:57 +0200
              Re: On generally accepted terminology for pointers and arrays Leigh Johnston <leigh@i42.co.uk> - 2011-04-13 15:10 +0100
              Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 11:09 -0400
                Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 12:04 -0400
            Re: On generally accepted terminology for pointers and arrays Noah Roberts <dont@email.me> - 2011-04-13 09:56 -0700
              Re: On generally accepted terminology for pointers and arrays cg_chas <cg_chas@hotmail.com> - 2011-04-13 14:11 -0400
      Re: On generally accepted terminology for pointers and arrays "Paul" <pchristor@yahoo.co.uk> - 2011-04-12 19:29 +0100
  Re: On generally accepted terminology for pointers and arrays Joshua Maurice <joshuamaurice@gmail.com> - 2011-04-12 09:36 -0700

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