Ejemplo n.º 1
0
Maybe < Customer const > getCustomer(Customers const &customers, std::string const &id)
{
  auto customer = customers.find(id);
  if (customer == customers.end())
    return nothing();
  else
    return just(customer->second);
};
Ejemplo n.º 2
0
void Persist::saveCustomers(Customers& customers)
{
    Customers::iterator iterator;
    const char* fileName = Customer::FILE_NAME.c_str();

    std::ofstream file(fileName, std::ios::out);
    if (!file)
    {
        std::cerr << "Error while opening " << fileName << std::endl;
        exit(EXIT_FAILURE);
    }

    for (iterator = customers.begin(); iterator != customers.end(); ++iterator)
    {
        Customer customer = (*iterator).second;
        file.write(reinterpret_cast<const char*>(&customer), sizeof(Customer));
    }
    file.close();
}