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# couple_letter.hh

    00001 // couple_letter.hh: this file is part of the Vaucanson project.
    00002 //
    00003 // Vaucanson, a generic library for finite state machines.
    00004 //
    00005 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008 The Vaucanson
    00006 // Group.
    00007 //
    00008 // This program is free software; you can redistribute it and/or
    00009 // modify it under the terms of the GNU General Public License
    00010 // as published by the Free Software Foundation; either version 2
    00011 // of the License, or (at your option) any later version.
    00012 //
    00013 // The complete GNU General Public Licence Notice can be found as the
    00014 // `COPYING' file in the root directory.
    00015 //
    00016 // The Vaucanson Group consists of people listed in the `AUTHORS' file.
    00017 //
    00018 #ifndef VCSN_ALGEBRA_IMPLEMENTATION_LETTER_COUPLE_LETTER_HH
    00019 # define VCSN_ALGEBRA_IMPLEMENTATION_LETTER_COUPLE_LETTER_HH
    00020
    00021 # include <vaucanson/algebra/concept/letter.hh>
    00022
    00023 // Needed to get defaults for projections.
    00024 # include <vaucanson/algebra/implementation/letter/char_letter.hh>
    00025 # include <vaucanson/algebra/implementation/letter/int_letter.hh>
    00026
    00027 // Here are functions to manipulate pairs.
    00028
    00029 namespace vcsn
    00030 {
    00031   namespace algebra
    00032   {
    00033     // Specialization for pairs.
    00034     template <typename U, typename V>
    00035     struct letter_traits<std::pair<U, V> >;
    00036
    00037   } // ! algebra
    00038
    00039 } // ! vcsn
    00040
    00041 namespace std
    00042 {
    00043   template <typename U, typename V>
    00044   std::ostream& operator<<(std::ostream&, const std::pair<U, V>&);
    00045
    00046 } // ! std
    00047
    00048 # if !defined VCSN_USE_INTERFACE_ONLY || defined VCSN_USE_LIB
    00049 #  include <vaucanson/algebra/implementation/letter/couple_letter.hxx>
    00050 # endif // ! VCSN_USE_INTERFACE_ONLY
    00051
    00052 #endif // ! VCSN_ALGEBRA_IMPLEMENTATION_LETTER_COUPLE_LETTER_HH