Does anyone have examples of well-written modern C++ code out there? I used to consider myself a C++ expert like circa 2011 but it's advanced to so quickly that it's almost like a foreign language to me... (though I have tried to keep up a bit... but it's hard without nontrivial examples)
Effective Modern C++ by Scott Meyer is a good tour of new features in the language. I highly recommend it. It's maybe a little too in-the-weeds in some parts but you can just skim those.
It only goes up to C++14 but there's not all that much that's new in C++17. C++20 looks like it's going to be a bigger update, hopefully Scott will come out with a new revision of Effective C++ to address the changes.
I don't really have experience to properly judge it myself, but Jason Turner is highly regarded in this area and references his ChaiScript project a lot in his talks (which are worth looking up on YouTube): https://github.com/ChaiScript/ChaiScript
