A good refresher on all of the functionality of the STL, but not sure how much more it helps compared to just reading the documentation. It is obviously cleaner and more concise, but does not offer that much more (as I might have expected). Nonetheless, I still learned about some newer features (like the new concurrency primitives) and will look more into those going forward.
3.5 rating. A good reference for C++11,14,17 standard library with lots of code samples. Last few chapters felt like they were thrown in haphazardly. Also, the author needs a good copy editor.