Hashbrown (the Swiss Tables implementation) replaced the previous HashMap implementation in July 2019.
The port is a little older, 2018. The idea was famously explained at CppCon 2017, I don't know whether Google had published on Swiss Tables before that year.
The port is a little older, 2018. The idea was famously explained at CppCon 2017, I don't know whether Google had published on Swiss Tables before that year.