std::uninitialized_fill_n

From Cppreference

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.

[edit] Parameters

[edit] Return value

iterator to the element past the last element copied.

[edit] Complexity

linear in count

[edit] Equivalent function

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

[edit] Example

[edit] See also