The other day, a C++ student approached me on-line, while he researched some tiny framework of mine. In his own words he”bumped into this problem”. For some reason, he still uses Visual Studio 2017 IDE. Annoyingly he had an image, not a source code, to prove the problem. Sigh.
In case you like to experiment and learn modern C++, you will be needing some R&D little nuggets of your own.
For example. C++ is notorious for its powerful metaprogramming capabilities. Thus it is very likely, in your C++ quest, you need to see the name of some type that is giving you a headache.