In the Chapter 5 of the 2nd Edition i find a problem about the example of MortimerPhonesEmployees.As follows:
    class EmployeeID
   {
      private readonly char prefix;
       private readonly int number;
      ..........
      ..........
      public override bool Equals(object obj)
      {
         EmployeeID rhs = obj as EmployeeID;
         if (rhs == null)
            return false;
         if (prefix == rhs.prefix && number == rhs.number)
            return true;
         return false;
      }
   }
  prefix and number are the private members of the object rhs,why it can be used like the bold?Thanks for the helper!


yuanlairuci

3rd.Edition Page 100
Note that the field is also public¡ªwe don¡¯t normally need
to make readonly fields private, because by definition they cannot be modified externally (the same principle also applies to constants).