# strings/string_ntree.hpp

    #ifndef STLPLUS_STRING_NTREE
    #define STLPLUS_STRING_NTREE
    ////////////////////////////////////////////////////////////////////////////////

    //   Author:    Andy Rushton
    //   Copyright: (c) Southampton University 1999-2004
    //              (c) Andy Rushton           2004 onwards
    //   License:   BSD License, see ../docs/license.html

    //   Generate a string representation of an ntree

    ////////////////////////////////////////////////////////////////////////////////
    #include "strings_fixes.hpp"
    #include "ntree.hpp"
    #include <string>

    ////////////////////////////////////////////////////////////////////////////////

    namespace stlplus
    {

      template<typename T, typename S>
      std::string ntree_to_string(const ntree<T>& values,
                                  S to_string_fn,
                                  const std::string& separator = "|",
                                  const std::string& indent_string = "  ");

    } // end namespace stlplus

    #include "string_ntree.tpp"
    #endif