std::array Container in C++20

C++20 offers two convenient ways to create arrays. std::to_array creates a std::array and std::make_shared allows it to create a std::shared_ptr of arrays.

std::to_array

std::to_array creates a std::array from an existing one-dimensional array. The elements of the created std::array are copy-initialized from the existing one-dimensional array.

The one-dimensional existing array can be a C-string, a std::initializer_list, or a one-dimensional array of ...