/usr/include/boost/fusion/adapted/boost_tuple/detail/at_impl.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | /*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
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)
==============================================================================*/
#if !defined(BOOST_FUSION_AT_IMPL_09262006_1920)
#define BOOST_FUSION_AT_IMPL_09262006_1920
#include <boost/tuple/tuple.hpp>
#include <boost/mpl/if.hpp>
namespace boost { namespace fusion
{
struct boost_tuple_tag;
namespace extension
{
template<typename T>
struct at_impl;
template <>
struct at_impl<boost_tuple_tag>
{
template <typename Sequence, typename N>
struct apply
{
typedef typename
tuples::element<N::value, Sequence>::type
element;
typedef typename
mpl::if_<
is_const<Sequence>
, typename tuples::access_traits<element>::const_type
, typename tuples::access_traits<element>::non_const_type
>::type
type;
static type
call(Sequence& seq)
{
return tuples::get<N::value>(seq);
}
};
};
}
}}
#endif
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