Boost.Preprocessor

#define BOOST_PP_LIST_FIRST_N(COUNT,LIST)

Expands to a list of the first COUNT elements of the list LIST.

For example,

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

expands to the same as:

BOOST_PP_TUPLE_TO_LIST(2,(+,-))

See

• BOOST_PP_LIST_REST_N()

Test

• list_test.cpp

#define BOOST_PP_LIST_FIRST_N_D(D,COUNT,LIST)

Can be used inside BOOST_PP_WHILE() (see for an explanation the D parameter).

Revised

© Copyright Housemarque Oy 2002

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