template <typename TimeT  =std::chrono::milliseconds>
struct mcx::utils::measure;

template <typename F ,
typename... Args>
static inline TimeT::rep execution(
    F && func,
    Args &&... args
)

static inline void start(
    void 
)

static inline TimeT::rep stop(
    void 
)

static std::chrono::system_clock::time_point start_time_;