39 lines
		
	
	
		
			838 B
		
	
	
	
		
			C++
		
	
	
	
	
	
		
		
			
		
	
	
			39 lines
		
	
	
		
			838 B
		
	
	
	
		
			C++
		
	
	
	
	
	
|   | 
 | ||
|  | #ifndef BOOST_MPL_ALWAYS_HPP_INCLUDED
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|  | #define BOOST_MPL_ALWAYS_HPP_INCLUDED
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|  | 
 | ||
|  | // Copyright Aleksey Gurtovoy 2001-2004
 | ||
|  | //
 | ||
|  | // 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)
 | ||
|  | //
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|  | // See http://www.boost.org/libs/mpl for documentation.
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|  | 
 | ||
|  | // $Id$
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|  | // $Date$
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|  | // $Revision$
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|  | 
 | ||
|  | #include <boost/mpl/aux_/preprocessor/default_params.hpp>
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|  | #include <boost/mpl/aux_/na.hpp>
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|  | #include <boost/mpl/aux_/arity_spec.hpp>
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|  | 
 | ||
|  | namespace boost { namespace mpl { | ||
|  | 
 | ||
|  | template< typename Value > struct always | ||
|  | { | ||
|  |     template< | ||
|  |         BOOST_MPL_PP_DEFAULT_PARAMS(BOOST_MPL_LIMIT_METAFUNCTION_ARITY, typename T, na) | ||
|  |         > | ||
|  |     struct apply | ||
|  |     { | ||
|  |         typedef Value type; | ||
|  |     }; | ||
|  | }; | ||
|  | 
 | ||
|  | BOOST_MPL_AUX_ARITY_SPEC(0, always) | ||
|  | 
 | ||
|  | }} | ||
|  | 
 | ||
|  | #endif // BOOST_MPL_ALWAYS_HPP_INCLUDED
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