If you’ve ever asked “what’s in C++17 and what does it mean for me and my code?” — and I hope you have — then this book is for you.

Herb Sutter, herbsutter.com

Available also as the paperback version @Amazon and the interactive online course @Educative

C++11 was a major update for the language. With all the modern features like lambdas, constexpr, variadic templates, threading, range-based for loops, smart pointers and many more powerful elements, it was enormous progress for the language. Even now, in 2018, lots of teams struggle to modernise their projects to leverage all the modern features. Later there was a minor update - C++14, which improved some things from the previous standard and added a few smaller elements. With C++17 we got a lot of mixed emotions.

Although C++17 is not as big as C++11, it's larger than C++14. Everyone expected modules, co-routines, concepts and other powerful features, but it wasn't possible to prepare everything on time.

Is C++17 weak?

Far from it! And this book will show you why!

I spent hundreds of hours investigating how the new things work in order to make a nice and practical book for you. The book will not only save your time but also will guide you through all the nuances of the language.

The book brings you exclusive content about C++17 and draws from the experience of many articles that have appeared on bfilipek.com. The chapters were rewritten from the ground-up and updated with the latest information. All of that equipped with lots of new examples and practical tips. Additionally, the book provides insight into the current implementation status, compiler support, performance issues and other relevant knowledge to boost your current projects.

If you have experience with C++11/14 and you want to move forward into the latest C++ standard, then this book is for you.

Here are the features you'll learn:

Part One: C++17 Language features

• Fixes and deprecation
• Language clarification
• General language features
• Templates
• Attributes

Part Two: C++17 The Standard Library

• std::optional
• std::variant
• std::any
• std::string_view
• String Conversions
• String Matching & Searchers
• Filesystem
• Parallel STL
• Other Changes

Part Three: More Examples and Use Cases

• Refactoring with std::optional
• Using if constexpr
• Using [[nodiscard]] attribute
• How to parallelise applications

Book Mentions:

"C++17 In Detail" appeared in the Visual C++ Team Blog as suggested books for learning C++17!

Have a look: Books on C++17

Review @CppDepend Blog https://cppdepend.com/blog/?p=1180

Review @A Sawicki Blog: http://asawicki.info/news_1715_book_review_c17_in_detail.html

There's also a book page at Goodreads: C++17 In Detail @Goodreads

Other formats:

• The book is also available in print at Amazon: C++17 in Detail Paperback
• And also as an interactive course at Educative: C++17 in Detail: A Deep Dive

Technical details:

I optimized this book for a PDF reading experience, but other ebook formats should also look good. If you have any issues with the copies, let me know and I'll try to update the formatting.

This book guides you through the evolution of C++ Lambda Expressions so that you can learn it step by step. We'll start with C++03 and a motivation to have "ad-hoc" functors, and then we'll move into the latest C++ standards:

• C++11 - early days of the feature. You'll learn about all the essential aspects of lambdas and several tricks you might apply. This is the longest chapter as we need to cover a lot of topics.
• C++14 - updates. See how to use generic lambdas and captures with an initialiser.
• C++17 - more improvements, especially by handling `this` pointer and allowing `constexpr`. You'll also learn about the overloaded pattern and how to derive from lambda.
• C++20 - in this section you'll see all of the new features adopted for C++20 like template lambdas and how to use them with concepts and constexpr algorithms.

Additionally, throughout the chapters, you'll learn about the following techniques:

• Immediately Invoked Functional Expressions (IIFE)
• How to instrument a default functor to gather extra information
• Replacing std::bind1st, std::bind2nd and removed functional stuff
• The Overloaded Pattern and how to inherit from a lambda
• Passing C++ captureless lambda as a function pointer to C API
• LIFTING with lambdas
• Storing lambdas in a container
• Variadic templates and arguments packs
• Lambdas and asynchronous execution
• and many more

While the book is 100% ready, I might release some "hot-fixes" smaller releases. All existing readers get new updates for free.

The book is inspired by two articles that appeared at bfilipek.com:

• Lambdas: From C++11 to C++20, Part 1
• Lambdas: From C++11 to C++20, Part 2

The articles also are based on a live coding presentation given by C++ Expert Tomasz Kamiński at our local Cracow C++ User Group.

Readers Feedback

Below, you can find the GoodReads page for the book with the readers' feedback:

C++ Lambda Story @GoodReads

FAQ

I'm a beginner in C++? Is that book for me?

The book assumes that you have a basic knowledge of C++. I suggest taking some elementary course first.

I'm an expert, and I know everything about C++? Is that book for me?

Yeah... you know all about C++? Is this possible? :)

Anyway, in your case, the book will give you a good refresher and even will show you some new tricks.

I'm not a beginner nor an expert...?

Perfect! So the book will show you lots of examples that will expand your knowledge and also remind you things that you may already know.

Additionally, throughout the book, you'll see other techniques and features related to modern C++ like, `constexpr`, exceptions, fold expressions, `std::thread`, perfect forwarding using callable objects and many more.

Is this a historical book with lots of boring descriptions?

The flow of the book focuses on the background behind lambda expression and its evolution. But it's meant to teach you practical things. You'll learn the lambdas step by step, understanding new capabilities that lambdas got with each C++ revision.

Will I get free updates?

Yes! While the book is 100% ready, I might add some more updates in the future, mainly bug fixes.

That's why it's best to by the book as early as possible; for example, the earliest version of the book was completely free.

The content looks like copied directly from the blog, so what's the point to buy it?

The very early version of the book was adapted directly from the blog... but then most of the content was rewritten and heavily updated. Now, you get at least 4x of what's available on the blog, not to mention the better quality and a nice looking pdf/ebook (there's no need to click and jump between separate blog articles).

On the Internet there's lot's of free content about lambdas, so why buy the book?

Sure! Even on my blog, you can find lots of articles about lambda expression. The C++ draft is also free, so you can read the specification on your own. Or have an additional explanation from great cppreference pages.

But the book will save you lots of your precious time looking for those quality content, extra examples, extended descriptions. What's more, by having a nice learning flow, you can understand this powerful C++ feature much faster at a super low price.

Is there a refund option?

Yes! if you buy the Book through Leanpub, then you have a 45-day guarantee. (Not applicable with Kindle direct Publishing though).

You can also download a preview with almost 60 pages.

Did I miss something?

If you have more questions, then please ask directly and write at bartlomiej DOT filipek AT bfilipek.com.