Not even considering that unordered_map is not the fastest hash map implementation for C++. There is plenty of the flat hash map implementation (swiss tables) a

Not even considering that unordered_map is not the fastest hash map implementation for C++. There is plenty of the flat hash map implementation (swiss tables) around that beats unordered_map by an other factor.... https://abseil.io/blog/20180927-swisstables https://abseil.io/blog/20180927-swisstables