Class BankAccount

Structural/NullObject/nullobject.cpp:34–70

};

struct BankAccount
{
  shared_ptr<OptionalLogger> log;
  string name;
  int balance = 0;

  static shared_ptr<Logger> no_logging;

  BankAccount(const string& name, int balance, const shared_ptr<Logger>& logger = no_logging)
    : log{make_shared<OptionalLogger>(logger)},
      name{name},
      balance{balance}
  {
  }

  void deposit(int amount)
  {
    balance += amount;
    log->info("Deposited $" /*+ lexical_cast<string>(amount) 
      + " to " + name + ", balance is now $" + lexical_cast<string>(balance)*/);
  }

  void withdraw(int amount)
  {
    /*if (balance >= amount)
    {
      balance -= amount;
      log->info("Withdrew $" + lexical_cast<string>(amount) 
        + " from " + name + ", $" + lexical_cast<string>(balance) + " left");
    } 
    else
    {
      log->warn("Tried to withdraw $" + lexical_cast<string>(amount) +
        " from " + name + " but couldn't due to low balance");
    }*/
  }
};

shared_ptr<Logger> BankAccount::no_logging{};