Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c++ > #9930

Re: block allocation

Show all headers | View raw

On 2011-09-08 17:09:01 +0200, Noah Roberts said:

> On Sep 8, 6:57 am, Philipp Kraus <philipp.kr...@flashpixx.de> wrote:
>> Hello,
>> 
>> I would like to allocate a lot of objects in a block. I have read that
>> I can use calloc (and free), but I think it is a C call and I would do
>> this in C++-style. I need around 100 till 100.000 objects in memory and
>> I would do this like:
>> 
>> std::vector<myclass> objects;
>> for(size_t i=0; i < maxsize; ++i)
>>      objects.push_back( myclass(...) );
> 
> If "..." is always the same then you can initialize the entire vector
> on construction:
> 
> std::vector<myclass> objects(maxsize, myclass(...));

I can't call my constructor, I need call a method named "clone()". I 
create a call like:

std::vector<myclass> vec(p_size);
for(std::size_t i=0; i < p_size; ++i)
     vec.psuh_back( myclass.clone() );

can I do it like:

std::vector<myclass> vec(p_size, myclass.clone()) with the same result?

Thanks

Phil

Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 15:57 +0200
  Re: block allocation Goran <goran.pusic@gmail.com> - 2011-09-08 07:32 -0700
  Re: block allocation Asger-P <junk@asger-p.dk> - 2011-09-08 16:42 +0200
  Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 16:50 +0200
  Re: block allocation Noah Roberts <roberts.noah@gmail.com> - 2011-09-08 08:09 -0700
    Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 17:15 +0200
      Re: block allocation Victor Bazarov <v.bazarov@comcast.invalid> - 2011-09-08 11:27 -0400
      Re: block allocation Asger-P <junk@asger-p.dk> - 2011-09-08 17:46 +0200
        Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 17:52 +0200
          Re: block allocation Asger-P <junk@asger-p.dk> - 2011-09-08 18:35 +0200
            Re: block allocation Philipp Kraus <philipp.kraus@flashpixx.de> - 2011-09-08 20:04 +0200
      Re: block allocation Jorgen Grahn <grahn+nntp@snipabacken.se> - 2011-09-08 20:27 +0000

csiph-web