const_int_vector

#include <iostream>

template <std::size_t... Args>
struct IsSorted;

template <std::size_t index, std::size_t next, std::size_t... Args>
struct IsSorted<index, next, Args...> {
    constexpr static const bool sorted =
        index < next && IsSorted<next, Args...>::sorted;
};

template <std::size_t almostLast, std::size_t last>
struct IsSorted<almostLast, last> {
    constexpr static const bool sorted = almostLast < last;
};

template <std::size_t... Args>
struct Numbers {
    constexpr static const bool is_sorted = true;
};

int main(int argc, char *argv[]) { Numbers<1, 2, 3> nums; }