Book Image

Expert C++

By : Vardan Grigoryan, Shunguang Wu
5 (1)
Book Image

Expert C++

5 (1)
By: Vardan Grigoryan, Shunguang Wu

Overview of this book

C++ has evolved over the years and the latest release – C++20 – is now available. Since C++11, C++ has been constantly enhancing the language feature set. With the new version, you’ll explore an array of features such as concepts, modules, ranges, and coroutines. This book will be your guide to learning the intricacies of the language, techniques, C++ tools, and the new features introduced in C++20, while also helping you apply these when building modern and resilient software. You’ll start by exploring the latest features of C++, and then move on to advanced techniques such as multithreading, concurrency, debugging, monitoring, and high-performance programming. The book will delve into object-oriented programming principles and the C++ Standard Template Library, and even show you how to create custom templates. After this, you’ll learn about different approaches such as test-driven development (TDD), behavior-driven development (BDD), and domain-driven design (DDD), before taking a look at the coding best practices and design patterns essential for building professional-grade applications. Toward the end of the book, you will gain useful insights into the recent C++ advancements in AI and machine learning. By the end of this C++ programming book, you’ll have gained expertise in real-world application development, including the process of designing complex software.
Table of Contents (22 chapters)
1
Section 1: Under the Hood of C++ Programming
7
Section 2: Designing Robust and Efficient Applications
17
Section 3: C++ in the AI World

Design patterns

Design patterns are one of the most expressive tools for programmers. They allow us to solve design problems in an elegant and well-tested way. When you are struggling to provide the best possible design of your classes and their relationship, a well-known design pattern may come to the rescue.

The simplest example of a design pattern is a Singleton. It provides us with a way to declare and use only one instance of the class. For example, suppose that the e-commerce platform has only one Warehouse. To access the Warehouse class, the project may require that we include and use it in many source files. To keep things in sync, we should make the Warehouse a Singleton:

class Warehouse {
public:
static create_instance() {
if (instance_ == nullptr) {
instance_ = new Warehouse();
}
return instance_;
}

static remove_instance() {
delete instance_;
...