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std::uninitialized_copy

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< cpp‎ | memory

 
 
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initializer_list(C++11)
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Relational operators
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pair
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Swap, forward and move
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Gestione della memoria dinamica
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Allocatori
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Allocators
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Non inizializzata stoccaggio
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Uninitialized storage
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uninitialized_copy
uninitialized_copy_n(C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
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C Library
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Defined in header <memory>
template< class InputIt, class ForwardIt >
ForwardIt uninitialized_copy( InputIt first, InputIt last, ForwardIt d_first );
Copia elementi del [first, last) gamma ad un inizio di memoria non inizializzata zona a d_first. Gli elementi della zona non inizializzata sono costruiti utilizzando il costruttore di copia.
Original:
Copies elements from the range [first, last) to an uninitialized memory area beginning at d_first. The elements in the uninitialized area are constructed using copy constructor.
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Indice

[modifica] Parametri

first, last -
la gamma degli elementi da copiare
Original:
the range of the elements to copy
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d_first -
l'inizio del campo di destinazione
Original:
the beginning of the destination range
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Type requirements
-
InputIt must meet the requirements of InputIterator.
-
ForwardIt must meet the requirements of ForwardIterator.

[modifica] Valore di ritorno

Iterator all'elemento passato l'ultimo elemento copiato.
Original:
Iterator to the element past the last element copied.
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[modifica] Complessità

Lineare della distanza tra first e last
Original:
Linear in the distance between first and last
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[modifica] Possibile implementazione

template<class InputIt, class ForwardIt>
ForwardIt uninitialized_copy(InputIt first, InputIt last, ForwardIt d_first)
{
    typedef typename std::iterator_traits<ForwardIt>::value_type Value;
    for (; first != last; ++first, ++d_first) {
        ::new (static_cast<void*>(&*d_first)) Value(*first);
    }
    return d_first;
}

[modifica] Esempio

[modifica] Vedi anche

copia un numero di oggetti da una zona di memoria non inizializzata
Original:
copies a number of objects to an uninitialized area of memory
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(funzione di modello) [edit]