Book Image

C++ Fundamentals

By : Antonio Mallia, Francesco Zoffoli
Book Image

C++ Fundamentals

By: Antonio Mallia, Francesco Zoffoli

Overview of this book

C++ Fundamentals begins by introducing you to the C++ compilation model and syntax. You will then study data types, variable declaration, scope, and control flow statements. With the help of this book, you'll be able to compile fully working C++ code and understand how variables, references, and pointers can be used to manipulate the state of the program. Next, you will explore functions and classes — the features that C++ offers to organize a program — and use them to solve more complex problems. You will also understand common pitfalls and modern best practices, especially the ones that diverge from the C++98 guidelines. As you advance through the chapters, you'll study the advantages of generic programming and write your own templates to make generic algorithms that work with any type. This C++ book will guide you in fully exploiting standard containers and algorithms, understanding how to pick the appropriate one for each problem. By the end of this book, you will not only be able to write efficient code but also be equipped to improve the readability, performance, and maintainability of your programs.
Table of Contents (9 chapters)
C++ Fundamentals

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);
  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...