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typelist.h

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/* Typelist -- lists of types for template programming
   Copyright (C) 2002 Aaron Bentley

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
namespace meta
{
   //typelists
   class Nil{};

   template <typename H, typename T=Nil>
   class Typelist 
   {
      public:
      typedef H Head;

      typedef T Tail;
   };

   template <typename T1=Nil, typename T2=Nil, typename T3=Nil,
      typename T4=Nil, typename T5=Nil, typename T6=Nil, typename T7=Nil>
   class List
   {
      public:
      typedef Typelist<T1, typename List<T2, T3, T4, T5, T6, T7>::Ret > Ret;
   };

   template<>
   class List<Nil, Nil, Nil, Nil, Nil, Nil, Nil>
   {
      public:
      typedef Nil Ret;
   };
}

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