Re: newbie question: exceptions

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From	Bo Persson <bo@bo-persson.se>
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Subject	Re: newbie question: exceptions
Date	Tue, 13 Aug 2019 17:02:07 +0200
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On 2019-08-13 at 16:38, Jivanmukta wrote:
> W dniu 13.08.2019 o 16:34, Jivanmukta pisze:
>> I am learning C++ and I have a question: why:
>>
>> throw exception();
>>
>> and not:
>>
>> throw new exception();

You can do either - throw an exception object or throw a pointer.

In the latter case you have to catch a pointer and also remember to 
delete it somewhere. Extra work. And an extra allocation.

So most people prefer the first version.

> 
> Does it make sense to code:
> 
> MyClass *myObj = MyClass();
> 
> instead of:
> 
> MyClass *myObj = new MyClass();

No. You can just do

MyClass   myObj;

and be done with it. No need for pointers here.

     Bo Persson

Thread

newbie question: exceptions Jivanmukta <jivanmukta@poczta.onet.pl> - 2019-08-13 16:34 +0200
  Re: newbie question: exceptions Jivanmukta <jivanmukta@poczta.onet.pl> - 2019-08-13 16:38 +0200
    Re: newbie question: exceptions Bo Persson <bo@bo-persson.se> - 2019-08-13 17:02 +0200
      Re: newbie question: exceptions Jivanmukta <jivanmukta@poczta.onet.pl> - 2019-08-14 10:06 +0200
        Re: newbie question: exceptions "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-14 10:25 +0200
          Re: newbie question: exceptions James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-14 08:41 -0400
            Re: newbie question: exceptions "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-14 19:39 +0200
              Re: newbie question: exceptions James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-14 19:47 -0400
                Re: newbie question: exceptions "Alf P. Steinbach" <alf.p.steinbach+usenet@gmail.com> - 2019-08-15 05:13 +0200
        Re: newbie question: exceptions Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-14 10:18 +0000
    Re: newbie question: exceptions Öö Tiib <ootiib@hot.ee> - 2019-08-13 08:03 -0700
      Re: newbie question: exceptions Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-08-17 22:07 -0700
        Re: newbie question: exceptions Öö Tiib <ootiib@hot.ee> - 2019-08-17 23:18 -0700
          Re: newbie question: exceptions Öö Tiib <ootiib@hot.ee> - 2019-08-18 00:05 -0700
            Re: newbie question: exceptions Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-08-18 05:18 -0700
    Re: newbie question: exceptions Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 17:39 +0200
  Re: newbie question: exceptions Szyk Cech <szykcech@spoko.pl> - 2019-08-13 17:01 +0200
  Re: newbie question: exceptions Szyk Cech <szykcech@spoko.pl> - 2019-08-13 17:03 +0200
  Re: newbie question: exceptions Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 17:03 +0200
  Re: newbie question: exceptions red floyd <dont.bother@its.invalid> - 2019-08-13 09:33 -0700
    Re: newbie question: exceptions Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-14 00:37 +0000
  Re: newbie question: exceptions Rosario19 <Ros@invalid.invalid> - 2019-08-24 08:32 +0200
    Re: newbie question: exceptions Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-24 11:30 +0000
    Re: newbie question: exceptions red floyd <dont.bother@its.invalid> - 2019-08-26 10:29 -0700

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