text: /* The following code example is taken from the book
   * "The C++ Standard Library - A Tutorial and Reference"
   * by Nicolai M. Josuttis, Addison-Wesley, 1999
   *
   * (C) Copyright Nicolai M. Josuttis 1999.
   * Distributed under the Boost Software License, Version 1.0. (See
   * accompanying file LICENSE_1_0.txt or copy at
   * http://www.boost.org/LICENSE_1_0.txt)
   */
  #include <iostream>
  
  /* print_elements()
   * - prints optional C-string optcstr followed by
   * - all elements of the collection coll
   * - separated by spaces
   */
  template <class T>
  inline void print_elements (const T& coll, const char* optcstr="")
  {
      typename T::const_iterator pos;
  
      std::cout << optcstr;
      for (pos=coll.begin(); pos!=coll.end(); ++pos) {
          std::cout << *pos << ' ';
      }
      std::cout << std::endl;
  }
  