You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.2 KiB
57 lines
1.2 KiB
|
|
#ifndef BOOST_MPL_VECTOR_AUX_FRONT_HPP_INCLUDED
|
|
#define BOOST_MPL_VECTOR_AUX_FRONT_HPP_INCLUDED
|
|
|
|
// Copyright Aleksey Gurtovoy 2000-2008
|
|
//
|
|
// 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)
|
|
//
|
|
// See http://www.boost.org/libs/mpl for documentation.
|
|
|
|
// $Id$
|
|
// $Date$
|
|
// $Revision$
|
|
|
|
#include <boost/mpl/front_fwd.hpp>
|
|
#include <boost/mpl/vector/aux_/at.hpp>
|
|
#include <boost/mpl/vector/aux_/tag.hpp>
|
|
#include <boost/mpl/aux_/nttp_decl.hpp>
|
|
#include <boost/mpl/aux_/config/typeof.hpp>
|
|
#include <boost/mpl/aux_/config/ctps.hpp>
|
|
|
|
namespace boost { namespace mpl {
|
|
|
|
#if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES)
|
|
|
|
template<>
|
|
struct front_impl< aux::vector_tag >
|
|
{
|
|
template< typename Vector > struct apply
|
|
: v_at<Vector,0>
|
|
{
|
|
};
|
|
};
|
|
|
|
#else
|
|
|
|
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
|
|
|
|
template< BOOST_MPL_AUX_NTTP_DECL(long, n_) >
|
|
struct front_impl< aux::vector_tag<n_> >
|
|
{
|
|
template< typename Vector > struct apply
|
|
{
|
|
typedef typename Vector::item0 type;
|
|
};
|
|
};
|
|
|
|
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
|
|
#endif // BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES
|
|
|
|
}}
|
|
|
|
#endif // BOOST_MPL_VECTOR_AUX_FRONT_HPP_INCLUDED
|