Error defining HashMap::iterator type, please help

[michaelmei]

the main program:

----------------------------------------------
include <hash_map>

template<class A, class B>
class HashMapTest
{
public:
typedef hash_map<A, B> hashMap; //fine!!
typedef hash_map<A, B>::const_iterator hashMapIter;
/*GNU g++ compiler complains the hash_map<std::string, std::string>::const_iterator is not derived from class HashMapTest. Don't know what it exactly means... */

};

--------------------------------------------------

I really dont know what is wrong with the const iterator for hash_map. Can anyone correct this code fragment?
I am kinda stuck here...

Thanks in advance.

 

[michaelmei]

the hash_map is under the namespace __gnu_cxx

so

that is:
typedef __gnu_cxx::hash_map<K, T> dict;
typedef __gnu_cxx::hash_map<K, T>::const_iterator dict_iter;

can anyone pls help? Can't fix it now!

 

[michaelmei]

I think it is a type problem,
if I use

typedef hash_map<string, string>::const_iterator hm_iter;

it compiles fine. But is there any way I can define an iterator type of a customized hash_map Key and Value (hash_map<K, T>::iterator)?

Please help