Hi: Can I use boost::Unordered_Map with std::bitset? Do I needto write my own operators, or are he required operators provided? Cheers Sean. __________ Information from ESET NOD32 Antivirus, version of virus signature database 3401 (20080829) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com