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Key benefits

Grasp the fundamentals of and learn to write effective C++ templates

Get up to speed with the latest C++20 template features such as constraints and concepts

Explore different patterns and idioms to integrate templates in your program design

Description

Learn how the metaprogramming technique enables you to create data structures and functions that allow computation to happen at compile time. With this book, you'll realize how templates help you avoid writing duplicate code and are key to creating generic libraries, such as the standard library or Boost, that can be used in a multitude of programs. The introductory chapters of this book will give you insights into the fundamentals of templates and metaprogramming. You'll then move on to practice writing complex templates and exploring advanced concepts such as template recursion, template argument deduction, forwarding references, type traits, and conditional compilation. Along the way, you'll learn how to write variadic templates and how to provide requirements to the template arguments with C++20 constraints and concepts. Finally, you'll apply your knowledge of C++ metaprogramming templates to implement various metaprogramming patterns and techniques. By the end of this book, you'll have learned how to write effective templates and implement metaprogramming in your everyday programming journey.

Who is this book for?

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.

What you will learn

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

What do you get with Print?

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Amazon verified reviews

Christian Albaret Feb 16, 2024

This the first book I am reading of the 5 I bought at once. I have been developping a lot in C++, much on and with templates, and some metaprogramming. The book goes through the features, tricks, and pitfalls of C++ templates, with many explanations., and then demonstrates some programming patterns. Much can readily be found in reference documentation, but they are hard to read, and one easky gets lost. The discussions in the book are what makes the difference.

Feefo Verified review

Vine Reviewer Nov 15, 2022

Since I've taught C++ courses, and have used templates extensively, I figured this book would be an easy read.Well parts of it were a fairly easy read -- but the author dived a little deeper than I expected into some of the details. For instance, I knew about type traits, but I didn't know how they were implemented. The author showed the background theory, and did a good job of explaining how/why they are used.I learned quite a bit about C++20 features, too. The author did an in-depth coverage of constraints and concepts, new features I had heard about, but never used. The main take-away I got from those topics was that those new features yielded *much* clearer error messages. If you have ever struggled with VS2017 compiler error messages, you will *love* constraints and concepts.The patterns & idioms section was a slow read, because it had a lot of new (to me) information.The last parts on ranges and algorithms, was a bit easier reading, since I've made extensive use of most of the material there.I was very impressed with Marius Bancila's writing style, although there were a few word choices that hinted that English was not his native language. But his English is excellent, as is his ability to teach fairly complex topics well. About the only thing I would have suggested (if I had been an editor) is the simple way to approach templates as a novice. Namely, write and test your class (or function) as a non-template, using a specific type, then convert it to a templated version. The reverse is also true; because template syntax is ugly (IMNSHO), the easiest way to understand a template written by somebody else is to copy it, and substitute some simple type for the template parameter(s) to get rid of the ugly template syntax.But that's not enough of a shortcoming to knock any points off. In fact, I think this book is more than just "good" -- it will be an important part of my reference library.Disclaimer: I was provided a copy of this book by Packt for review. This review is my honest opinion of the book.

Amazon Verified review

Y. Arazi Sep 13, 2022

Another great book from Marius. Great information about the modern and advanced templates and c++. Highly recommended.

Krishnan Raghavan Nov 30, 2022

I have always wanted to understand how templates are written in C++ for a very long time and was very excited when I saw this book. Confession: I am yet to read the whole book but I thought I would write a small review of the few initial chapters that I have read in case it helps anyone.Metaprogramming is the programming technique of using templates to generate code at compile-time that is then merged with the rest of the source code for compiling a final program. This book is divided into 3 parts. The first two parts will give the user a good understanding of all the different kinds of templates available in C++. The third part will help the reader put their knowledge into practice to perform metaprogramming with templates.The author has ensured that this book caters to all levels of C++ programmers (Beginners, Intermediate and Advanced). At the end of each chapter, there are questions that will ensure that the concepts learned in the chapter are tested. Please do not skip these. Further reading will give the reader about what to read next to ensure that the chapter lessons as well understood.I will post a detailed chapter-wise review in the next few days.A big shout out to Marius Bancila for writing a book a such a difficult topic.

Adam Rackis Jan 02, 2023

I’ve read a lot of C++ books, but this was one of my favorites. It’s a solid deep dive into C++ templates. It starts slowly enough for non-experts to keep up, and then covers some solid material, including new C++20 content.Highly recommend.

Template Metaprogramming with C++: Learn everything about C++ templates and unlock the power of template metaprogramming

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