What is more efficient a switch case or an std::map

Question

I\'m thinking about the tokenizer here.
Each token calls a different function inside the parser.
What is more efficient:

• A map of std::functions/boos

Answer 1

What is your definition of "efficient"? If you mean faster, then you probably should profile some test code for a definite answer. If you're after flexible and easy-to-extend code though, then do yourself a favor and use the map approach. Everything else is just premature optimization...