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Re: template with STL container

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On 10/4/2011 10:16 AM, softwareEngineer wrote:
> Il 04/10/2011 16:01, Victor Bazarov ha scritto:
>> On 10/4/2011 10:00 AM, softwareEngineer wrote:
>>> I'd like to manage a template in a STL vector container i.e. :
>>>
>>> template <typename T>
>>> class MY_Value
>>> {
>>> // ...
>>> T GetValue ();
>>>
>>> private :
>>> T _val;
>>> };
>>>
>>> now in my main would :
>>> std::vector <MY_Value*> v;
>>
>> In order for this to compile, 'v' has to have a concrete type.
>> Otherwise, how should the compiler know how much memory to allocate
>> for it and how to initialize it?
>>
>>> MyValue<int> iV1 = 1;
>>> MyValue<int> iV2 = 2;
>>> v[0] = &iV1;
>>> v[1] = &iV2;
>>>
>>> but i have had a problem because (obviously) MyValue it's a template
>>> .... ;
>>>
>>> There is a workaround to manage a template in a standard container
>>> (vector for example) ?
>>
>> Well, is there a reason that
>>
>> std::vector<MY_Value<int>*> v;
>>
>> does not work for you?
>>
>> V
> Yes, but I need a vector of generic value (float, int, ecc.)

You didn't say that before, did you?

> MyValue<int> iV1 = 1;
> MyValue<float> iV2 = 2.1;
> v[0] = &iV1;
> v[1] = &iV2;

Check the FAQ section 34.

V
-- 
I do not respond to top-posted replies, please don't ask

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template with STL container softwareEngineer <ovNOSPAM@NOSPAMlibero.it> - 2011-10-04 16:00 +0200
  Re: template with STL container Victor Bazarov <v.bazarov@comcast.invalid> - 2011-10-04 10:01 -0400
    Re: template with STL container softwareEngineer <ovNOSPAM@NOSPAMlibero.it> - 2011-10-04 16:16 +0200
      Re: template with STL container Victor Bazarov <v.bazarov@comcast.invalid> - 2011-10-04 10:44 -0400
      Re: template with STL container Noah Roberts <roberts.noah@gmail.com> - 2011-10-04 07:48 -0700
      Re: template with STL container Juha Nieminen <nospam@thanks.invalid> - 2011-10-04 19:14 +0000
      Re: template with STL container Nobody <nobody@nowhere.com> - 2011-10-05 09:51 +0100
        Re: template with STL container Victor Bazarov <v.bazarov@comcast.invalid> - 2011-10-05 08:05 -0400
          Re: template with STL container Juha Nieminen <nospam@thanks.invalid> - 2011-10-05 15:17 +0000
        Re: template with STL container Gert-Jan de Vos <gert-jan.de.vos@onsneteindhoven.nl> - 2011-10-05 05:43 -0700
        Re: template with STL container "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-10-05 20:08 +0100
          Re: template with STL container softwareEngineer <ovNOSPAM@NOSPAMlibero.it> - 2011-10-07 10:42 +0200

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