{
const TARIFF * tariff = u->GetTariff();
std::string message = tariff->TariffChangeIsAllowed(*newTariff);
- if (message == "")
+ if (message.empty())
{
if (!u->GetProperty().tariffName.Set(m_ucr.tariffName.const_data(), &m_currAdmin, m_login, &m_store))
return -1;