How to make a 2D map similar to a 2D array

Question

Is it possible to make a 2d map?

Like this:

map< int, int, string> testMap;

And filling the values would be like:

testMap[1][3] = "Hello";

Answer 1

You can nest two maps:

#include <iostream>
#include <map>
#include <string>

int main()
{
    std::map<int,std::map<int,std::string>> m;

    m[1][3] = "Hello";

    std::cout << m[1][3] << std::endl;

    return 0;
}