ColumnNameIndexMap makeColumnNameMap() { auto indexMap = makeColumnIndexMap(); ColumnNameIndexMap columnMap; for (auto &index : indexMap) { columnMap.emplace(index.second, index.first); } return columnMap; }
ColumnNameIndexMap makeColumnNameMap(){ auto indexMap = makeColumnIndexMap(); ColumnNameIndexMap columnMap; for(auto it = indexMap.begin(); it != indexMap.end(); ++it){ columnMap.emplace(it->second, it->first); } return columnMap; }