Re: [Boost-users] aligned_storage / alignment_of / type_with_alignment

From: Gottlob Frege (gottlobfrege_at_[hidden])
Date: 2005-10-07 11:05:07

>
> Date: Fri, 07 Oct 2005 08:32:34 +0200
> From: Joaqu?n M? L?pez Mu?oz <joaquin_at_[hidden]>
> Subject: Re: [Boost-users] aligned_storage / alignment_of /
> type_with_alignment
> To: boost-users_at_[hidden]
> Message-ID: <43461682.7A1C50F0_at_[hidden]>
> Content-Type: text/plain; charset=iso-8859-1
>
> Gottlob Frege ha escrito:
>
> This is *almost* correct. There's a typo in 1.33 Boost.TypeTraits docs
> (corrected
> in 1.33.1) by which the explanations on type_with_alignment and
> aligned_storage
> are swapped. So, what you want is
>
> template <typename T>
> struct uninitted
> {
> aligned_storage<sizeof(T), alignment_of<T>::value>::type myT;
>
> void init_later(some_params)
> {
> new (&myT) T(some_params);
> }
> };
>
> Apart from this, your construct is OK and works as you expect. Actually,
> this is
> what aligned_storage is meant to be used for.

Best,
>
> Joaqu?n M L?pez Mu?oz
> Telef?nica, Investigaci?n y Desarrollo
>
>

OK, thanks. By its name, I thought aligned_storage sounded like the right
thing (and thus I included it in the subject line) but I wasn't sure how it
fit in.

I think aligned_storage<sizeof(T), alignment_of<T>::value>::type deserves
its own template - maybe 'storage_for' ?

Anyhow, I think I have everything I need, so away I go....

Tony