Programming with C++20 teaches programmers with C++ experience the new features of C++20 and how to apply them. It does so by assuming C++11 knowledge. Elements of the standards between C++11 and C++20 will be briefly introduced, if necessary. However, the focus is on teaching the features of C++20.

You will start with learning about the so-called big four Concepts, Coroutines, std::ranges, and modules. The big four are followed by smaller yet not less important features. You will learn about std::format, the new way to format a string in C++. In Chapter 6, you will learn about a new operator, the so-called spaceship operator, which makes you write less code.

You then will look at various language improvements, ensuring more consistency and reducing surprises. You will learn how lambdas improved in C++20 and what new elements you can now pass as non-type template parameters. Your next stop is the improvements to the STL.

Of course, you will not end this book without learning about what happened in the constexpr-world.

Table of Contents

1 Concepts: Predicates for strongly typed generic code

2 Coroutines: Suspending functions

3 Ranges: The next-generation STL

4 Modules: The superior way of includes

5 std::format: Modern & type -safe text formatting

6 Three-way comparisons: Simplify your comparisons

7 Lambdas in C + + 20: New features

8 Aggregates: Designated initializers and more

9 Class-types as non-type template parameters

10 New STL elements

11 Language Updates

12 Doing (more) things at compile-time

About the Author

Andreas Fertig is the CEO of Unique Code GmbH, which offers training and consulting for C++ specialized in embedded systems. He worked for Philips Medizin Systeme GmbH for ten years as a C++ software developer and architect focusing on embedded systems.

Andreas is involved in the C++ standardization committee. He is a regular speaker at conferences internationally. Textbooks and articles by Andreas are available in German and English.

His passion for teaching people how C++ works is why he created C++ Insights (https://cppinsights.io).

You find him online at https://andreasfertig.com.