Function defaultPreRollOutCallback

include/thundersvm/util/log.h:865–865

    typedef std::function<void(const char*, std::size_t)> PreRollOutCallback;
    namespace base {
        static inline void defaultPreRollOutCallback(const char*, std::size_t) {}
/// @brief Enum to represent timestamp unit
        enum class TimestampUnit : base::type::EnumType {
            Microsecond = 0, Millisecond = 1, Second = 2, Minute = 3, Hour = 4, Day = 5