danlark1/pair_init.h

## pair_init.h
constexpr std::pair<int, int> t;
static_assert(t.first == 0 && t.second == 0);

std::array<int, 5> arr;
// assert(arr[0] == 0); // Undefined behavior
	constexpr std::pair<int, int> t;
	static_assert(t.first == 0 && t.second == 0);

	std::array<int, 5> arr;
	// assert(arr[0] == 0); // Undefined behavior