There is no official C++ standard, unlike several languages (Java, Python, …) where there are referentials for code and design style, good practices, … It didn’t exist until this book where two world-renowned C++ authors set the basis for your every day development.
I got this book from a partnership between http://www.developpez.com/ and O’Reilly. Thanks to both of them.
What defines “beautiful code”? How do people think a beautiful code should look like? This isn’t a simple question to answer, so this book asked several lead programmers (Ruby, Python, C, C++, Java, Perl, …) some beautiful code they wrote or they encountered. And if some want to answer “think about a robust, simple to extend code and that will be it” (and I would be one of them before I read the book), there are some code that would not fit this profile.