Lesson 04: Generic Programming and Templates

Activity 13: Read Objects from a Connection

1. We start by including the headers of the files that provided the connection and the user account object:

   #include <iostream>
   #include <connection.h>
   #include <useraccount.h>

2. We can then start to write the writeObjectToConnection function. Declare a template which takes two typename parameters: an Object and a Connection. Call the static method serialize() on the object to get the std::array representing the object, then call writeNext() on the connection to write the data to it:

   template<typename Object, typename Connection>
   void writeObjectToConnection(Connection& con, const Object& obj) {
       std::array<char, 100> data = Object::serialize(obj);
       con.writeNext(data);
   }

3. We can then write readObjectFromConnection. Declare a template taking the same two parameters as before: an Object and a Connection. Inside, we call the connection readNext() to get the data stored...