Throughout this book, you will learn practical options to initialize data members in Modern C++. More specifically, this text teaches various types of constructors, non-static data member initialization, inline variables, designated initializers, and more. Additionally, you’ll see the changes and new techniques from C++11 to C++20 and lots of examples to round out your understanding.

The goal of this book is to equip you with the following knowledge:

• The basic rules of data members and constructors.
• Essential information about copy constructors, move constructors and destructors.
• How to efficiently initialize non-static data members using C++11 features like non-static data member initialization, inheriting, and delegating constructors.
• How to streamline working with static data members with inline variables from C++17.
• How to work with container-like member, non-copyable data members like `const` data members or move-able only data members.
• Aggregates and Designated initializers from C++20.

The book contains 15 chapters in the following structure:

• Chapters 1 to 5 create a foundation for the rest of the book. They cover constructors, destructors, and the basics of data members.
• Chapter 6 shows a use case for passing strings into constructors.
• Chapter 7 is a short quiz on constructors. You can check your knowledge from the first "part" of the book.
• Chapter 8 describe Non-static Data Member Initialization (NSDMI), a powerful feature from C++11 that improves how we work with data members.
• Chapter 9 serves as a practical summary for NSDMI, where you can solve a few exercises.
• (In progress) Chapter 10 discusses how to initialize container-like data members.
• (In progress) Chapter 11 contains information about non-regular data members and how to handle them in a class. You'll learn about `const` data members, `unique_ptr` as a data member, and references.
• Chapter 12 shows how `inline` variables from C++17 work.
• Chapter 13 moves to C++20 and describes Designated Initializers, a handy feature based on similar thing from the C language.
• Chapter 14 it's the summary chapter with a demo that gathers most of the features described in the book.
• Chapter 15 is the final quiz with seven questions ranging from constructors to designated initializers.

Most sections are completed, but I'm still working on filling two chapters and polishing the quality.

Who is this book for?

The book is intended for beginner/intermediate C++ programmers who want to learn how to work with static and non-static class data members in Modern C++ (from C++11 to C++20).

You should know at least some of the basics of creating and using custom classes.

This text is also helpful for experienced programmers who know older C++ standards and want to move into C++17/C++20