Book Image

Modern C++ Programming Cookbook - Second Edition

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook - Second Edition

By: Marius Bancila

Overview of this book

C++ has come a long way to be one of the most widely used general-purpose languages that is fast, efficient, and high-performance at its core. The updated second edition of Modern C++ Programming Cookbook addresses the latest features of C++20, such as modules, concepts, coroutines, and the many additions to the standard library, including ranges and text formatting. The book is organized in the form of practical recipes covering a wide range of problems faced by modern developers. The book also delves into the details of all the core concepts in modern C++ programming, such as functions and classes, iterators and algorithms, streams and the file system, threading and concurrency, smart pointers and move semantics, and many others. It goes into the performance aspects of programming in depth, teaching developers how to write fast and lean code with the help of best practices. Furthermore, the book explores useful patterns and delves into the implementation of many idioms, including pimpl, named parameter, and attorney-client, teaching techniques such as avoiding repetition with the factory pattern. There is also a chapter dedicated to unit testing, where you are introduced to three of the most widely used libraries for C++: Boost.Test, Google Test, and Catch2. By the end of the book, you will be able to effectively leverage the features and techniques of C++11/14/17/20 programming to enhance the performance, scalability, and efficiency of your applications.
Table of Contents (16 chapters)
13
Bibliography
14
Other Books You May Enjoy
15
Index

Static polymorphism with the curiously recurring template pattern

Polymorphism provides us with the ability to have multiple forms for the same interface. Virtual functions allow derived classes to override implementations from a base class. They represent the most common elements of a form of polymorphism, called runtime polymorphism, because the decision to call a particular virtual function from the class hierarchy happens at runtime. It is also called late binding, because the binding between a function call and the invocation of the function happens late, during the execution of the program. The opposite of this is called early binding, static polymorphism, or compile time polymorphism because it occurs at compile time through functions and operators overloading.

On the other hand, a technique called the curiously recurring template pattern (or CRTP) allows simulating the virtual functions-based runtime polymorphism at compile time, by deriving classes from a base class...