I learnt C++ in the 90s. I internalized the various gotchas and learned to use a relatively safe and expressive subset of the language. I'm still programming in

I learnt C++ in the 90s. I internalized the various gotchas and learned to use a relatively safe and expressive subset of the language. I'm still programming in C++ now and (I'm slightly ashamed to say) haven't bothered to keep up with all the new features. I keep meaning to make the time, but there is always higher priority stuff to do. I use foreach plus the occasional lambda and auto type. What have I been missing?