This book is intended for C++ programmers who want to learn from the wisdom of the community—from commonly-recognized good solutions to frequently occurring design problems. Another way to put it is that this book is a way for a programmer to learn from someone else's mistakes.
This is not a learn C++ book; the target audience is mostly programmers who are reasonably familiar with the tools and the syntax of the language, and who are more interested in learning how and why these tools should be used. However, this book will also be useful for programmers wanting to learn more about C++, but wishing that their study could be guided by concrete and practical examples (for such programmers, we recommend having a C++ reference book close to hand as well). Finally, programmers who want to learn not just what's new in C++11, C++14, and C++17, but what all these new features can be used for, will hopefully find this book illuminating as well.