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Re: Array inside struct inside container

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In article <Xns9F43865A8800Dnonenonenone@69.16.186.52>,
none  <none@none.none> wrote:
>I've seen forum posts here and there asking "How do I create an STL 
>container of arrays?"  Or, equivalently, "How do I fix this syntax:"
>
>   std::vector<float[20]> v;

The obvious answer is:

std::vector< std::vector<float> > v;

>The answers to these questions are generally one of two things:
>
>1) Use a boost::array, or
>2) Put the array in a struct, like so:
>
>   // In header file
>   stuct wrapper { float f[20]; };
>
>   // In CPP file
>   std::vector<wrapper> v;
>
>I was under the impression that things stored in STL containers needed to 
>be copyable and assignable.  That second option seems incorrect to me, 
>unless the compiler is expected to generate both an operator= and a copy 
>constructor for the struct that perform a memcpy() for the contents of f.
>
>Is it?

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Array inside struct inside container none <none@none.none> - 2011-08-16 19:12 +0000
  Re: Array inside struct inside container Victor Bazarov <v.bazarov@comcast.invalid> - 2011-08-16 15:28 -0400
    Re: Array inside struct inside container none <none@none.none> - 2011-08-16 20:07 +0000
      Re: Array inside struct inside container Leigh Johnston <leigh@i42.co.uk> - 2011-08-16 21:18 +0100
        Re: Array inside struct inside container James Kanze <james.kanze@gmail.com> - 2011-08-22 11:01 -0700
          Re: Array inside struct inside container Leigh Johnston <leigh@i42.co.uk> - 2011-08-22 20:44 +0100
            Re: Array inside struct inside container Leigh Johnston <leigh@i42.co.uk> - 2011-08-22 20:51 +0100
      Re: Array inside struct inside container Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2011-08-16 23:26 +0200
      Re: Array inside struct inside container "Bo Persson" <bop@gmb.dk> - 2011-08-17 12:29 +0200
        Re: Array inside struct inside container Juha Nieminen <nospam@thanks.invalid> - 2011-08-17 13:06 +0000
  Re: Array inside struct inside container yatremblay@bel1lin202.(none) (Yannick Tremblay) - 2011-08-22 13:20 +0000
    Re: Array inside struct inside container Leigh Johnston <leigh@i42.co.uk> - 2011-08-22 14:42 +0100
      Re: Array inside struct inside container yatremblay@bel1lin202.(none) (Yannick Tremblay) - 2011-08-23 09:20 +0000

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