Practical Metaprogramming in C++

Introduction

The book "Practical C++ Metaprogramming" (authors: Edouard Alligand, Joel Falcou) is a compact but rich guide dedicated to one of the most complex and powerful aspects of the C++ language — metaprogramming. Published in 2016, it focuses on the C++11 and C++14 standards and offers a practical approach to writing code that executes at compile time. Despite its small size (68 pages), the book contains many ready-made recipes and explanations that will help a developer master techniques for working with templates, constexpr, and SFINAE.

What the book is about

The book does not attempt to cover all the theory of metaprogramming — it is focused on practical tasks. The authors systematically cover:

• Basics of templates and their specialization;
• Working with types: checking, transformation, compile-time manipulation;
• Using constexpr for compile-time computations;
• The SFINAE (Substitution Failure Is Not An Error) technique and its application for conditional inclusion/exclusion of overloads;
• Creating compile-time containers and algorithms;
• Integrating metaprogramming with real projects.

Each chapter contains code examples that can be immediately adapted to your own needs.

Who this book is for

The book is intended for C++ developers already familiar with the language syntax and having basic experience with templates. For beginners just starting to learn C++, the material may seem complex. However, for those who want to delve deeper into metaprogramming and write more efficient, flexible code, this is an excellent starting point.

What the reader will learn

• How to write code that executes at compile time, speeding up program execution;
• How to use std::enable_if and SFINAE to create flexible interfaces;
• How to implement compile-time computations using constexpr;
• How to manipulate types: add, remove, check properties;
• How to create your own type traits;
• How to avoid common mistakes when working with templates.

Strengths

1. Practical focus. Unlike many academic books, there are no long theoretical digressions here — each section is backed by code that can be applied immediately.

2. Compactness. 68 pages is not a drawback, but an advantage. The book can be read in a couple of days, gaining concentrated knowledge.

3. Relevance for C++11/14. Although new standards (C++17, C++20) have been released since then, the foundations laid in the book remain the bedrock of modern C++.

4. Clear structure. Each chapter is dedicated to a separate technique, allowing the book to be used as a reference.

Who it is recommended for

The book will be useful for:

• Developers of C++ libraries and frameworks;
• Programmers working on high-load systems where performance is critical;
• Students and teachers studying advanced C++ features;
• Anyone who wants to move from writing "just working code" to creating elegant and efficient solutions.

If you have already mastered the basics of C++ and want to reach a new level — "Practical C++ Metaprogramming" will be an excellent assistant.