id summary reporter owner description type status milestone component version severity resolution keywords cc 12633 boost::unordered_map try_emplace dkabrane@… Daniel James Is there something planned to implement C++17 try_emplace function in unordered_map (and other unordered associative containers) ? Feature Requests closed Boost 1.64.0 unordered Boost 1.60.0 Optimization fixed try_emplace unordered