first_n.hpp File Reference

#include <boost/preprocessor/config/config.hpp>
#include <boost/preprocessor/control/if.hpp>
#include <boost/preprocessor/seq/detail/split.hpp>
#include <boost/preprocessor/tuple/eat.hpp>
#include <boost/preprocessor/tuple/elem.hpp>

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Macros
#define	BOOST_PP_SEQ_FIRST_N(n, seq)   BOOST_PP_SEQ_FIRST_N_I(n, seq)
#define	BOOST_PP_SEQ_FIRST_N_I(n, seq)   BOOST_PP_IF(n, BOOST_PP_TUPLE_ELEM, BOOST_PP_TUPLE_EAT_3)(2, 0, BOOST_PP_SEQ_SPLIT(n, seq (nil)))

Macro Definition Documentation

#define BOOST_PP_SEQ_FIRST_N	(		n,
			seq
	)		BOOST_PP_SEQ_FIRST_N_I(n, seq)

#define BOOST_PP_SEQ_FIRST_N_I	(		n,
			seq
	)		BOOST_PP_IF(n, BOOST_PP_TUPLE_ELEM, BOOST_PP_TUPLE_EAT_3)(2, 0, BOOST_PP_SEQ_SPLIT(n, seq (nil)))