adding to vector of vector<int>, check if element already present

[LMHmedchem]

The problem, in plain English, is that the output stream has no idea how to output a path_iterator.

cout << "path_iterator " << path_iterator << endl;

Regards,

Paul McKenzie

Yes, I forgot to make the output a pointer.

This sort of gets me going,

   vector<vector<int> > new_set_of_paths;
   vector<int>::iterator path_iterator;
   vector<int> check_path;

   for(j=0; j<last_vertex_delta; j++) {
     current_neighbor = vertex_list[last_vertex_in_path].neighbor_numbers[j];

      if(path_length > 2) {
          check_path = new_set_of_paths[path_count];

         // search path to see if new atom is already part of path
         path_iterator = find(check_path.begin(),
                              check_path.end(),
                              current_neighbor);

            cout << "last_atom_in_path " << last_atom_in_path << endl;
            cout << "current_neighbor " << current_neighbor << endl;
            cout << "path_iterator " << * path_iterator << endl;
            cout << endl;

      }

      if(path_iterator == 0) {
         new_set_of_paths[path_count].push_back( current_neighbor );
         path_count ++; // 
      }

   check_path.clear();
   }

I don't seem to know how to evaluate if the iterator indicates that it found a match. I can't do, if(path_iterator == 0), or if(*path_iterator == 0), and I also tried if(path_iterator > check_path.end()) and a few similar things. I can't seem to find a reference that shows how to evaluate an iterator. The * iterator value prints as 0 when a match isn't found, but I can't seem to get the syntax for working that into the conditional.

LMHmedchem