Copy std::vector into std::array

Question

How do I copy or move the first n elements of a std::vector into a C++11 std::array?

Answer 1

Use std::copy_n

std::array arr;
std::copy_n(vec.begin(), N, arr.begin());

Edit: I didn't notice that you'd asked about moving the elements as well. To move, wrap the source iterator in std::move_iterator.

std::copy_n(std::make_move_iterator(v.begin()), N, arr.begin());