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std::uninitialized_copy

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C++
 
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Uninitialized storage
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uninitialized_copy
uninitialized_copy_n(C++11)
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Defined in header <memory>
template< class InputIt, class Size, class ForwardIt >
ForwardIt uninitialized_copy_n( InputIt first, Size count, ForwardIt d_first);
 (ya que C + +11)
Copias count elementos de una serie de principios para un comienzo first memoria no inicializada en el área d_first. Los elementos en el área sin inicializar se construyen utilizando constructor de copia .
Original:
Copies count elements from a range beginning at first to an uninitialized memory area beginning at d_first. The elements in the uninitialized area are constructed using copy constructor.
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Si se produce una excepción durante la inicialización, la función no tiene ningún efecto.
This section is incomplete
Reason: update possible implementation to reflect this
Original:
If an exception is thrown during the initialization, the function has no effects.
This section is incomplete
Reason: update possible implementation to reflect this
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Contenido

[editar] Parámetros

first -
el comienzo de la gama de los elementos a copiar
Original:
the beginning of the range of the elements to copy
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d_first -
el comienzo del rango de destino
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.

[editar] Valor de retorno

Iterator al elemento pasado el último elemento copiado .
Original:
Iterator to the element past the last element copied.
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[editar] Complejidad

Lineal en count .
Original:
Linear in count.
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[editar] Posible implementación

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

[editar] Ejemplo

This section is incomplete
Reason: no example

[editar] Ver también
copia un rango de objetos a una zona de memoria no inicializada
Original:
copies a range of objects to an uninitialized area of memory
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(función de plantilla) [edit]
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