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Re: Help needed

Path csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From Ian Collins <ian-news@hotmail.com>
Newsgroups comp.lang.c++
Subject Re: Help needed
Date Sun, 5 Apr 2020 07:35:11 +1200
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On 05/04/2020 02:33, Ned Latham wrote:
> Alf P. Steinbach wrote:
> 
>> Here's an example:
>>
>>
>> #include <iostream>
>> using namespace std;        // Do this to get roughly pre-standard behavior.
> 
> Not me. Namespace is beyond the pale.
> 
>> struct Non_native
>> {
>>       double amount;
>>
>>       operator double() const { return amount; }
> 
> What's this for? It's not used, below.

It is.

>>
>>       void advance()
>>       {
>>           amount += 0.01;
>>       }
>>
>>       Non_native operator++( int )
> 
> double is non-native?
> 
>>       {
>>           Non_native result = *this;
>>           advance();
>>           return result;
>>       }
>> };
>>
>> int main()
>> {
>>       Non_native o = {3.14};
>>
>>       cout << "Originally " << o++ << "." << endl;
>>       cout << "After: " << o << "." << endl;
>> }
> 
> I'm not even going to try it, Alf, And I bet you haven't done so.
> That code requires overload operators = and << for the struct.
> 

No, it doesn't.  The code compiles and behaves exactly as intended and 
your inability to comprehend it clearly demonstrates what I thought all 
along, you are clueless.

-- 
Ian.

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Thread

Help needed Gerry Wolff <gerrywolff65@gmail.com> - 2020-04-03 09:56 -0700
  Re: Help needed Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2020-04-03 18:18 +0100
    Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 12:57 -0500
      Re: Help needed Melzzzzz <Melzzzzz@zzzzz.com> - 2020-04-03 18:17 +0000
        Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 16:41 -0500
      Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-03 14:58 -0400
        Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 16:45 -0500
          Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 17:52 -0500
      Re: Help needed Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-04-03 20:05 +0000
        Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 16:58 -0500
          Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 17:50 -0500
          Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-04 00:15 -0400
            Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-03 23:58 -0500
              Re: Help needed Ian Collins <ian-news@hotmail.com> - 2020-04-04 18:06 +1300
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 00:35 -0500
                Re: Help needed Ian Collins <ian-news@hotmail.com> - 2020-04-04 19:54 +1300
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 02:22 -0500
                Re: Help needed Bo Persson <bo@bo-persson.se> - 2020-04-04 10:33 +0200
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 04:55 -0500
                Re: Help needed David Brown <david.brown@hesbynett.no> - 2020-04-04 13:02 +0200
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 07:15 -0500
                Re: Help needed David Brown <david.brown@hesbynett.no> - 2020-04-04 16:49 +0200
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 04:10 -0500
                Re: Help needed Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2020-04-05 16:31 +0100
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 11:37 -0500
                Re: Help needed Bonita Montero <Bonita.Montero@gmail.com> - 2020-04-04 14:19 +0200
                Re: Help needed David Brown <david.brown@hesbynett.no> - 2020-04-04 16:57 +0200
                Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-04 10:51 -0400
                Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-04 10:44 -0400
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 04:06 -0500
                Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 11:04 -0400
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 11:31 -0500
                Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 16:59 -0400
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 21:38 -0500
              Re: Help needed "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2020-04-04 13:51 +0200
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 08:33 -0500
                Re: Help needed Ian Collins <ian-news@hotmail.com> - 2020-04-05 07:35 +1200
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 04:19 -0500
                Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-05 11:27 -0400
                Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-04 22:27 -0400
                Re: Help needed Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2020-04-04 14:50 +0100
              Re: Help needed James Kuyper <jameskuyper@alumni.caltech.edu> - 2020-04-04 10:27 -0400
                Re: Help needed Ian Collins <ian-news@hotmail.com> - 2020-04-05 07:37 +1200
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 03:45 -0500
          Re: Help needed Paavo Helde <myfirstname@osa.pri.ee> - 2020-04-04 09:02 +0300
            Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 01:20 -0500
              Re: Help needed Ian Collins <ian-news@hotmail.com> - 2020-04-04 19:43 +1300
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 02:10 -0500
                Re: Help needed Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-04-04 01:58 -0700
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 05:04 -0500
                Re: Help needed Paavo Helde <myfirstname@osa.pri.ee> - 2020-04-04 14:37 +0300
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-04 07:25 -0500
                Re: Help needed Paavo Helde <eesnimi@osa.pri.ee> - 2020-04-04 17:39 +0300
                Re: Help needed Ned Latham <nedlatham@woden.valhalla.oz> - 2020-04-05 04:02 -0500
  Re: Help needed Bonita Montero <Bonita.Montero@gmail.com> - 2020-04-03 19:35 +0200
    Re: Help needed Bonita Montero <Bonita.Montero@gmail.com> - 2020-04-03 20:01 +0200
      Re: Help needed Bonita Montero <Bonita.Montero@gmail.com> - 2020-04-04 16:16 +0200
        Re: Help needed Bonita Montero <Bonita.Montero@gmail.com> - 2020-04-04 18:58 +0200
    Re: Help needed Christian Gollwitzer <auriocus@gmx.de> - 2020-04-03 22:01 +0200
      Re: Help needed Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2020-04-03 21:05 +0100
        Re: Help needed Bo Persson <bo@bo-persson.se> - 2020-04-04 02:10 +0200
      Re: Help needed Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-04-04 08:19 +0000
      Re: Help needed Gerry Wolff <gerrywolff65@gmail.com> - 2020-04-05 02:56 -0700
    Re: Help needed Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-04-04 01:14 +0100
    Re: Help needed Gerry Wolff <gerrywolff65@gmail.com> - 2020-04-05 02:49 -0700
  Re: Help needed Sam <sam@email-scan.com> - 2020-04-04 16:30 -0400
    Re: Help needed Mr Flibble <flibbleREMOVETHISBIT@i42.co.uk> - 2020-04-05 05:58 +0100
    Re: Help needed Gerry Wolff <gerrywolff65@gmail.com> - 2020-04-05 03:21 -0700
      Re: Help needed Juha Nieminen <nospam@thanks.invalid> - 2020-04-07 06:33 +0000
        Re: Help needed Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-04-07 10:39 +0000

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