> People who spent many years developing C++ already understand what the standard library offers That statement isn't true for (at least) me. The main reason

> People who spent many years developing C++ already understand what the standard library offers That statement isn't true for (at least) me. The main reason is that I'm usually working on code that must be compile-able as C++11, and/or may require an old-ish version of gcc's standard C++ library. So in my daily work I usually have little/no reason to interact with the newer parts of the standard library.