Function execAndReturnFirstDouble

src/utilities/sql/SqlFile.hpp:1231–1237

  // Variadic arguments are the bind arguments if any, to replace '?' placeholders in the statement string
  template <typename... Args>
  boost::optional<double> execAndReturnFirstDouble(const std::string& statement, Args&&... args) const {
    boost::optional<double> result;
    if (m_impl) {
      result = m_impl->execAndReturnFirstDouble(statement, std::forward<Args>(args)...);
    }
    return result;
  }

  boost::optional<double> execAndReturnFirstDouble(const std::string& statement) const {
    // Forward to the variadic one. This one is for the ruby bindings