Исправление dataman, 16.10.24 12:24 (текущая версия) :
https://github.com/Tessil/sparse-map. https://martin.ankerl.com/2019/04/01/hashmap-benchmarks-01-overview/ https://github.com/martinus/unordered_dense
Исходная версия dataman, 16.10.24 12:23:
https://github.com/Tessil/sparse-map. https://martin.ankerl.com/2019/04/01/hashmap-benchmarks-01-overview/