Iterating Through a Map Within a Map

[LeonsBuddyDave]

I have a map of maps but I'm not sure how to iterate through the inner one.

Here's what I have so far:

The type:

// It's a map...of maps. INCEPTION
typedef map <string, map <string, string>> iniTree;

The attempted iteration; the outer one seems to be fine but I'm at a loss for what to do for the inner one.

iniTree::iterator GroupPos;
iniTree::iterator KeyPos;
for (GroupPos = myMap.begin(); GroupPos != myMap.end(); GroupPos++) {
	for (KeyPos = myMap[GroupPos].begin(); KeyPos != myMap[GroupPos].end(); KeyPos++) {

	}
}

If anyone can point me in the right direction, I'd really appreciate it.

-LBD

[Paul McKenzie]

I have a map of maps but I'm not sure how to iterate through the inner one.

#include <string>
#include <map>

typedef std::map< std::string, std::string> MapStringToString;
typedef std::map< std::string, MapStringToString > iniTree;

iniTree myMap;

void foo()
{
    iniTree::iterator GroupPos;
    iniTree::iterator KeyPos;
    for (GroupPos = myMap.begin(); GroupPos != myMap.end(); ++GroupPos) 
    {
         MapStringToString& innerMap = GroupPos->second;
         for (MapStringToString::iterator it = innerMap.begin(); it !=  innerMap.end(); ++it )
         {
            //...
         }
     }
}

Regards,

Paul McKenzie

[LeonsBuddyDave]

Thank you very much.