Assign to this object the value resulting from first clearing this unordered set and then inserting each value_type object in the specified values initializer list, ignoring those keys having a value equivalent to that which appears earlier in the list; return a reference providing modifiable access to this object. This method requires that the (template parameter) type KEY type be copy-insertable into this set (see {Requirements on KEY}).
Declared in <bslstl_unorderedset.h>
unordered_set<ManagedAttribute, AttributeHash>&
operator=(std::initializer_list<ManagedAttribute> values);