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std::uninitialized_fill_n

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Defined in header <memory>
template< class ForwardIt, class Size, class T >
void uninitialized_fill_n( ForwardIt first, Size count, const T& value )

Copies the given value value to the first count elements in an uninitialized memory area beginning at first. The elements in the uninitialized area are constructed using copy constructor.

Indice

[modifica] Parametri

first - the beginning of the range of the elements to initialize
count - number of elements to construct
value -
il valore di costruire gli elementi con
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the value to construct the elements with
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Type requirements
-
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 in count
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Linear in count
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[modifica] Possibile implementazione

template< class ForwardIt, class Size, class T >
void uninitialized_fill_n(ForwardIt first, Size count
                          const T& value)
{
    typedef typename std::iterator_traits<ForwardIt>::value_type Value;
    for (; count > 0; ++first, --count) {
        ::new (static_cast<void*>(&*first)) Value(value);
    }
    return first;
}

[modifica] Esempio

[modifica] Vedi anche

copia di un oggetto ad una zona di memoria non inizializzata
Original:
copies an object to an uninitialized area of memory
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(funzione di modello) [edit]