#include <map>
#include <string>
struct MyClass{ std::string fred; };
int main(){
// assume MyClass has a string var 'fred' and a method 'ethel'
std::map<const char*,MyClass*> MyMap;

MyMap[ "A" ] = new MyClass;
MyMap.find( "A" )->second->fred = "I'm a Mertz";


}