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  A variadic implementation of variadic boost::signals2::signal, used when variadic
  template support is detected in the compiler.

  Author: Frank Mori Hess <>
  Begin: 2009-05-26
// Copyright Frank Mori Hess 2009
// Use, modification and
// distribution is subject to the Boost Software License, Version
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at

// For more information, see


#include <boost/core/enable_if.hpp>
#include <boost/preprocessor/control/expr_if.hpp>
#include <boost/signals2/detail/variadic_arg_type.hpp>
#include <boost/signals2/detail/variadic_slot_invoker.hpp>
#include <boost/smart_ptr/make_shared.hpp>
#include <boost/type_traits/function_traits.hpp>
#include <boost/type_traits/is_void.hpp> 

namespace boost
  namespace signals2
    namespace detail
      template<typename Signature> class variadic_extended_signature;
      // partial template specialization
      template<typename R, typename ... Args>
        class variadic_extended_signature<R (Args...)>
        typedef boost::function<R (const boost::signals2::connection &, Args...)> function_type;
    } // namespace detail
  } // namespace signals2
} // namespace boost

#include <boost/signals2/detail/signal_template.hpp>