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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.

Índice

[editar] Parâmetros

first - the beginning of the range of the elements to initialize
count - number of elements to construct
value -
o valor para a construção dos elementos de
Original:
the value to construct the elements with
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Type requirements
-
ForwardIt must meet the requirements of ForwardIterator.

[editar] Valor de retorno

Iterador para o elemento passado o último elemento copiado.
Original:
Iterator to the element past the last element copied.
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[editar] Complexidade

Linear em count
Original:
Linear in count
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[editar] Possível implementação

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;
}

[editar] Exemplo

[editar] Veja também

copia um objeto para uma área de memória não inicializada
Original:
copies an object to an uninitialized area of memory
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(modelo de função) [edit]