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first_n.hpp File Reference


Defines

#define BOOST_PP_LIST_FIRST_N(N, L)
 Expands to a list of the first N elements of the list. More...

Detailed Description

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Define Documentation

#define BOOST_PP_LIST_FIRST_N (  N,
L    ) 
 

Expands to a list of the first N elements of the list.

For example, 

  BOOST_PP_LIST_FIRST_N(2,BOOST_PP_TUPLE_TO_LIST(4,(+,-,*,/)))

expands to a list containing + and -.

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