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JeroMiya

iterators in hash_map data

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I would like to use a structure as the data for a hash_map, and I want the structure to contain iterators to elements in the hash_map, but the compiler is giving me errors. For example, this code would give an error:
  
#include <iostream>
#include <hash_map>


using namespace std;

template<class T>
class HashData
{
    public:
        hash_map<T, HashData<T>, hash<T>, equal_to<T> >::iterator it;

};


int main()
{
    HashData<int> bob;

    return 0;
}

Errors:

stl_pair.h: In instantiation of 'pair<const int, HashData<int> >':

stl_hashtable.h:239:  instantiated from '_Select1st<pair<const int,HashData<int> > >'

stl_hashtable.h:239:  instantiated from 'hashtable.h:239:  instantiated from 'hashtable<pair<const int,HashData<int> >,int,hashallocator<HashData<int> > >'

test.cpp:11:  instantiated from 'HashData<int>'
test.cpp:18:  instantiated from here

stl_pair.h:39: invalid use of undefined type 'class HashData<int>'
test.cpp:13: forward declaration of 'class HashData<int>'
stl_pair.h:50: confused by earlier errors, bailing out

   
Is this just something that you can't do, or am I doing something incorrectly? Jeremy Bell [edited by - Magmai Kai Holmlor on November 3, 2002 9:10:23 PM]

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