[Boost-users] Question on intrusive hooks [addendum]

Subject: [Boost-users] Question on intrusive hooks [addendum]
From: Arun Raghavan (bananasing_at_[hidden])
Date: 2009-10-15 12:08:18

Sorry I mistyped by previous email slightly - my_node_t derives from avl_set_base_hook<> as below:

I'm trying to come to grips with using the boost intrusive containers,
but I don't think I understand how the lifetime of hooks need to be
managed. This piece of code fails the !hook.is_linked() assertion: 
Any pointers? Also, is there is a non-intrusive AVL tree container as part of boost? 

struct my_node_t : public avl_set_base_hook<> { 
    int i_; 
    my_node_t(int i): i_(i) {} 
    
    friend bool operator<(const my_node_t& lhs, const my_node_t& rhs)  { 
        return lhs.i_ < rhs.i_; 
    } 

   friend ostream& operator<< (ostream& os,  const my_node_t& n) { 
       return os << n.i_; 
   } 
}; 

int main() { 
   avltree<my_node_t> tree; 
   vector<my_node_t> vec; 
   for (int i = 0; i < 10; ++i) vec.push_back(my_node_t(i)); 
   for (int i = 0; i < 10; ++i) tree.insert_unique(vec[i])); 
   copy(tree.begin(), tree.end(), ostream_operator<my_node_t>(cout, " "); 
} 
  

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