#ifndef queue_h_
#define queue_h_

#include <list>

template <class T>
class queue {
 public:
  queue();
  queue( queue<T> const& other );

  bool empty() const;
  unsigned int size() const;
  T& front();
  T const& front() const;
  T& back();
  T const& back() const;
  void push( T const& value );
  void pop();

 private:
  std::list<T> elements;
};

#endif