This is the code repository for Template Metaprogramming with C++ , published by Packt.

Learn everything about C++ templates and unlock the power of template metaprogramming

Templates are a key feature of the C++ language that enable us to reuse source code, write more efficient code, and create generic libraries that can be used in many applications. Yet, they are often complex and hard to understand. This book will help you in understanding and writing templates from their simplest forms to the latest C++20 features.

This book covers the following exciting features:

• Understand the syntax for all types of templates
• Discover how specialization and instantiation works
• Get to grips with template argument deduction and forwarding references
• Write variadic templates with ease
• Become familiar with type traits and conditional compilation
• Restrict template arguments in C++20 with constraints and concepts
• Implement patterns such as CRTP, mixins, and tag dispatching

If you feel this book is for you, get your copy today!

• Page 258: The line of code return value--; must be read as return value-1; or return --value;

All of the code is organized into folders. For example, Chapter02.

The code will look like the following:

template <typename T>
struct parser : base_parser<T>
{
   void parse()
   {
   this->init(); // OK
   std::cout << "parse\n";
   }
};

The source code for the book is organized per chapters. Each chapter has its own subfolder in the src folder. These subfolders are called chapter_01, chapter_02, etc. For most chapters, the code is found in a single source file, main.cpp. This file is organized in multiple namespaces, such as n101, n102, n103 etc. for the first chapter, n201, n202, n203 etc. for the second chapter and so on.

All the code provided in the book is cross-platform. You can use any of the major compilers, MSVC, Clang, or GCC to compile the sources.

You can also run snippets of code using compilers available online:

• Compiler Explorer
• Wandbox
• C++ Insights

You must have CMake to build the code.

Run the following commands to create a solution for Visual Studio 2019:

mkdir build
cd build
cmake -G "Visual Studio 16 2019" -A x64 ..

Run the following commands to create a solution for Visual Studio 2022:

mkdir build
cd build
cmake -G "Visual Studio 17 2022" -A x64 ..

Following is what you need for this book: This book is for beginner-to-intermediate C++ developers who want to learn about template metaprogramming as well as advanced C++ developers looking to get up to speed with the new C++20 features related to templates and the the various idioms and patterns. Basic C++ coding experience is necessary to get started with this book.

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. Click here to download it.

• C++20 STL Cookbook [Packt] [Amazon]

• CMake Best Practices [Packt] [Amazon]

Marius Bancila is a software engineer with two decades of experience in developing solutions for line of business applications and more. He is the author of Modern C++ Programming Cookbook and The Modern C++ Challenge. He works as a software architect and is focused on Microsoft technologies, mainly developing desktop applications with C++ and C#. He is passionate about sharing his technical expertise with others and, for that reason, he has been recognized as a Microsoft MVP for C++ and later developer technologies since 2006. Marius lives in Romania and is active in various online communities.

If you have already purchased a print or Kindle version of this book, you can get a DRM-free PDF version at no cost.
Simply click on the link to claim your free PDF.

https://packt.link/free-ebook/9781803243450