Static arrays at compile time in C++

Question

I was wondering if its possible to make the following answer more generic, in the sense that the type of the array be templated instead of just unsigned:

I\'ve enclosed

Answer 1

It helps if you indent the struct. The problem is that you are defining the data static member variable inside the Array struct. But it should be at namespace scope:

template
struct Array
{
    template struct ArrayHolder {
        static const ArrayType data[sizeof...(args)];
    };

    template class F, ArrayType... args> 
        struct generate_array_impl {
            typedef typename generate_array_impl::value, args...>::result result;
        };

    template class F, ArrayType... args> 
        struct generate_array_impl<0, F, args...> {
            typedef ArrayHolder::value, args...> result;
        };

    template class F> 
        struct generate_array {
            typedef typename generate_array_impl::result result;
        };
};

template template 
        const ArrayType Array::ArrayHolder::data[sizeof...(args)] = { args... };