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.

Parameters

first	-	the beginning of the range of the elements to initialize
count	-	number of elements to construct
value	-	the value to construct the elements with
Type requirements
- ForwardIt must meet the requirements of LegacyForwardIterator.

Return value

Iterator to the element past the last element copied.

Complexity

Linear in count

Possible implementation

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; }

See also

Template:cpp/memory/dcl list uninitialized fill