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- #ifndef BOOST_BIND_ARG_HPP_INCLUDED
- #define BOOST_BIND_ARG_HPP_INCLUDED
- // MS compatible compilers support #pragma once
- #if defined(_MSC_VER) && (_MSC_VER >= 1020)
- # pragma once
- #endif
- //
- // bind/arg.hpp
- //
- // Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
- //
- // 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/bind/bind.html for documentation.
- //
- #include <boost/config.hpp>
- #include <boost/is_placeholder.hpp>
- namespace boost
- {
- template<bool Eq> struct _arg_eq
- {
- };
- template<> struct _arg_eq<true>
- {
- typedef void type;
- };
- template< int I > struct arg
- {
- BOOST_CONSTEXPR arg()
- {
- }
- template< class T > BOOST_CONSTEXPR arg( T const & /* t */, typename _arg_eq< I == is_placeholder<T>::value >::type * = 0 )
- {
- }
- };
- template< int I > BOOST_CONSTEXPR bool operator==( arg<I> const &, arg<I> const & )
- {
- return true;
- }
- #if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
- template< int I > struct is_placeholder< arg<I> >
- {
- enum _vt { value = I };
- };
- template< int I > struct is_placeholder< arg<I> (*) () >
- {
- enum _vt { value = I };
- };
- #endif
- } // namespace boost
- #endif // #ifndef BOOST_BIND_ARG_HPP_INCLUDED
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