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

[jsmith]

typedef std::map< std::string, std::string > inner_t;
typedef std::map< std::string, inner_t >     outer_t;
typedef outer_t::iterator                    outer_iter_t;
typedef inner_t::iterator                    inner_iter_t;

outer_t tree;

for( outer_iter_t o = tree.begin(); o != tree.end(); ++o )
    for( inner_iter_t i = o->second.begin(); i != o->second.end(); ++i )
        std::cout << i->first << " == " << i->second << std::endl;