if (abs(handler->time_delta_ - time_delta_s) < 0.000000001) {
handler->callback_();
if (handler->persistancy_ == Handler::Persistancy::PERSISTANT)
handler->time_delta_ = -1;
else
if (abs(handler->time_delta_ - time_delta_s) < 0.000000001) {
handler->callback_();
if (handler->persistancy_ == Handler::Persistancy::PERSISTANT)
handler->time_delta_ = -1;
else