Here’s a refresher sheet I made for C++ to remind me of a bunch of syntax details that I always seem to forget when I've switched to another programming language for too long. It's less of a complete reference and more of a "you better not hose these things during an interview". Let me know if you find it helpful or if you see any mistakes.
(Also: what else would you add? What are the first details to erode when you haven't used a language in a while?)