text: #ifndef NODELIST_H
  #define NODELIST_H
  
  #include "node.h"
  #include <vector>
  
  class Node;
  class NodeList
  {
    public:
        Node* head = nullptr;
        int count = 0;
  
        Node operator[](int idx);
        bool AddNode(long double mass = 1.0);
        bool AddNode(std::vector<std::string>);
  
        bool AddNode(Node*);
  
    private:
  
  };
  #endif
  