Re: array of objects of parametrized constructor

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From	Ian Collins <ian-news@hotmail.com>
Newsgroups	comp.lang.c++
Subject	Re: array of objects of parametrized constructor
Date	Wed, 04 May 2011 10:18:59 +1200
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On 05/ 4/11 07:29 AM, Alf P. Steinbach /Usenet wrote:
> * asit, on 03.05.2011 20:32:
>> consider this class
>>
>> class A
>> {
>> 	int a;
>> public:
>> 	A(int x):a(x)
>> 	{
>> 		cout<<"Parametrized constructor"<<endl;
>> 	}
>> };
>>
>> How can I create array of objects ??
>>
>> I can't add the default constructor and overload the parametrized
>> constructor.
>
> The simplest solution is to use std::vector, from the<vector>  header.
>
> E.g.
>
>       std::vector<A>   myArray;
>
>       myArray.push_back( A( 1 ) );
>       //...
>
> And that's what you should be doing anyway, as a beginner. Don't mess around
> with raw arrays. For that matter, don't add assembly language stubs either. ;-)

In this case, using a temporary array as a helper would be fine:

   A tmp[] = { 1,2,3,4 };
   std::vector<A> a(tmp, tmp+(sizeof(tmp)/sizeof(A)) );

-- 
Ian Collins

Thread

array of objects of parametrized constructor asit <lipun4u@gmail.com> - 2011-05-03 11:32 -0700
  Re: array of objects of parametrized constructor "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-05-03 21:29 +0200
    Re: array of objects of parametrized constructor Ian Collins <ian-news@hotmail.com> - 2011-05-04 10:18 +1200
      Re: array of objects of parametrized constructor "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-05-04 11:11 +0200
        Re: array of objects of parametrized constructor Ian Collins <ian-news@hotmail.com> - 2011-05-04 21:24 +1200
          Re: array of objects of parametrized constructor "Alf P. Steinbach /Usenet" <alf.p.steinbach+usenet@gmail.com> - 2011-05-04 11:42 +0200
            Re: array of objects of parametrized constructor Ian Collins <ian-news@hotmail.com> - 2011-05-04 21:34 +1200
  Re: array of objects of parametrized constructor Noah Roberts <dont@email.me> - 2011-05-03 14:27 -0700
    Re: array of objects of parametrized constructor Leigh Johnston <leigh@i42.co.uk> - 2011-05-03 23:00 +0100

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