SeasonI/flags.h

enum class Flag:int{
    NONE,
    TEST_FLAG1,
    TEST_FLAG2,
    TEST_FLAG3,
};



template <typename Enumeration>
auto flagint(Enumeration const value)
    -> typename std::underlying_type<Enumeration>::type
{
    return static_cast<typename std::underlying_type<Enumeration>::type>(value);
}