c++ - Lazy initilaize static std::array without template

Question

Can we init a static array without using template class?

Something look like:

struct Foo
{
public:
    static size_t Size;
    static std::array<int, Size> arr;
    static void init(size_t Size)
    {
        // Do init method with Size
    }
};

int main()
{
    Foo::init(10);
}

Currently I'm using the template, but that's not my expectation.

template <size_t Size>
struct Foo
{
public:
    static std::array<int, Size>;
};
template <size_t Size>
std::array<int, Size> arr;

question from:https://stackoverflow.com/questions/66057967/lazy-initilaize-static-stdarray-without-template