vector<vector<string>> inside map

[DeepBlack]

Hi,

I don't know if what I am trying to do is crazy. but the following is the problem

I have a map:

map<string,vector<vector<string>>> mill_positions;

and I am trying to insert into the map as in the following snippet:

vector<string> mill_pos_v;
	vector<vector<string>> mill_pos_set_v;
	//a0
	mill_pos_v.push_back("b1");
	mill_pos_v.push_back("c2");
	mill_pos_set_v.push_back(mill_pos_v);
	mill_pos_v.clear();
	mill_pos_v.push_back("a3");
	mill_pos_v.push_back("a6");
	mill_pos_set_v.push_back(mill_pos_v);
	mill_pos_v.clear();
	mill_pos_v.push_back("d0");
	mill_pos_v.push_back("g0");
	mill_pos_set_v.push_back(mill_pos_v);
	mill_pos_v.clear();

        ///the value does not get inserted into the map here
	mill_positions["a0"]=mill_pos_set_v; 
	mill_pos_set_v.clear();

but nothing gets inserted into the map. Is there some other way I should do this? Or is there any other approach to do the same task?

I hope I've been able to make myself clear. Could someone please help me with this?

Thanks in advance!

[firedraco]

You don't need to cross-post on multiple forums:
http://cplusplus.com/forum/general/66148/

[DeepBlack]

I'm sorry! I posted it at first here and wasn't sure if this was the right forum and so, re-posted it in the General C++ programming forum. I'll remove this.