Question

How can I populate a vector of map along with a rowID , or an iterator for each row of a valuepair Set

Like for example

typedef std::map<string, string> mapDB;
mapDB mapDB_colVal;
typedef mapDB::iterator mapDB_iter ;
vector<pair<int,mapDB> > mapDB_vec;

//populate mapDB_colVal 1st row
mapDB_colVal["X"]="APPLE";
mapDB_colVal["Y"]="RED";

How can I assign/populate 1st row mapDB_vec with mapDB_colVal

//populate mapDB_colVal 2nd row
mapDB_colVal["X"]="PEAR";
mapDB_colval["Y"]="RED";

Any ideas would be most appreciated.

Thanks

Leo

Answer 1

mapDB_vec db;

//populate mapDB_colVal 1st row
mapDB_colVal["X"]="APPLE";
mapDB_colVal["Y"]="RED";
db.push_back(make_pair(some_row_id, mapDB_colVal));

//populate mapDB_colVal 2nd row
mapDB_colVal["X"]="PEAR";
mapDB_colval["Y"]="RED";
db.push_back(make_pair(some_other_row_id, mapDB_colVal));

I’m not sure what row IDs you want. If they’re just sequential numbers, then they would seem redundant, since vectors allow you to identify elements by their position.