how to use stl::map as two dimension array

Question

Could you let us know how to use stl:map as two dimension array? I wanted to access the individual elements as like mymap[i][j] where I do not know beforehand what the value

Answer 1

An alternative solution to Andrew Stein's which plays nicer with the rest of STL is to simply use

typedef std::map, int > AMapT;
AMapT mymap;
mymap[std::make_pair(2, 4)] = 10;
...
AMapT::iterator f = mymap.find(std::make_pair(3, 5));

For example, with this way you don't need to chain two calls to map::find to search for a single value.