Method begin

constexpr/const_array.hpp:88–88

	constexpr const data_type& back() const { return elems[array_size - 1]; }
	
	constexpr data_type* begin() { return elems; }
	constexpr const data_type* begin() const { return elems; }
	
	constexpr data_type* end() { return elems + array_size; }