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Query: An indispensible read for developing C++ expertise

This book concentrates on the whys and hows of designing classes, and using C++'s syntactic features to express the way a class is intended to be used. As such, it is an insightful guide into the part of C++ that is most unique to the language among modern OO languages.I highly recommend this book to intermediate-level C++ engineers who are seeking to grow toward expertise, as well as engineers who want to develop their class design skills.The material in this book (and its sequel, to a lesser extent) is the crux of the difference between "an OO programmer who knows C++" and "A C++ expert".