std::get_temporary_buffer
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<tbody> </tbody>| Dclar dans l'en-tte <memory>
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template< class T > std::pair< T*, std::ptrdiff_t > get_temporary_buffer( std::ptrdiff_t count ) |
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Alloue de stockage suffisante pour stocker jusqu'
count objets adjacents de T type. Si la mmoire est insuffisante pour tous les objets count, alloue moins de count, si possible .Original:
Allocates storage sufficient to store up to
count adjacent objects of type T. If there is insufficient memory for all count objects, allocates less than count, if possible.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Paramtres
| count | - | le nombre d'objets allouer
Original: the number of objects to allocate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Retourne la valeur
Un std::pair contenant un pointeur vers le dbut de l'emplacement allou et le nombre d'objets qui correspondent la mmorisation qui a t effectivement attribu (peut tre nul) .
Original:
An std::pair holding a pointer to the beginning of the allocated storage and the number of objects that fit in the storage that was actually allocated (may be zero).
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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Exceptions
Exemple
#include <algorithm>
#include <iostream>
#include <memory>
#include <string>
int main()
{
const std::string s[] = {"string", "1", "test", "..."};
std::string* p = std::get_temporary_buffer<std::string>(4).first;
std::copy(std::begin(s), std::end(s),
std::raw_storage_iterator<std::string*, std::string>(p));
for (std::string* i = p; i != p+4; ++i) {
std::cout << *i << '\n';
i->~basic_string<char>();
}
std::return_temporary_buffer(p);
}
Rsultat :
string
1
test
...
Voir aussi
libre de stockage non initialise Original: frees uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction gnrique) | |