organizing data types

Hello

I've been wondering how do you guys organize different data types in c++.

For instance datatype customer:

Code:

---

class customer {
public:

  std::string get_name() { return m_name; }
  std::string get_surname() { return m_surname; }

private:
  std::string m_name;
  std::string m_surname;
};

class customer_list {
  typedef std::string data_type;
  typedef std::deque<data_type> list;
  typedef list::size_type size_type;
};

---

Or would you put

Code:

---

typedef std::string list_type;

---

inside customer class?

Many thanks in advance!

This code doesn't make any sense to me. Why is customer_list not just a typedef for std::list/vector/set<customer>?