A place to stash experiments I do with godbolt / quickbench / etc.
https://quick-bench.com/q/70Eg-tVt3M4lR4tlMqv3_ZiOcYs
std::map
seems faster below 128 items (when the map is int:int).
https://gist.github.com/harrism/118609d98e0ed185846ce8688802ecab