Boost.Preprocessor

#define BOOST_PP_LIST_TRANSFORM(OP,DATA,LIST)

Applies the macro OP(D,DATA,X) to each element X of the list producing a new list.

In other words, expands to:

BOOST_PP_LIST_CONS(OP(D,DATA,BOOST_PP_LIST_AT(LIST,0)),
BOOST_PP_LIST_CONS(OP(D,DATA,BOOST_PP_LIST_AT(LIST,1)),
...
BOOST_PP_LIST_CONS(OP(D,DATA,BOOST_PP_LIST_AT(LIST,BOOST_PP_DEC(BOOST_PP_LIST_SIZE(LIST)))),
BOOST_PP_LIST_NIL) ... ))

For example,

BOOST_PP_LIST_TRANSFORM(BOOST_PP_ADD_D,2,BOOST_PP_TUPLE_TO_LIST(2,(1,2)))

expands to the same as:

BOOST_PP_TUPLE_TO_LIST(2,(3,4))

Test

• list_test.cpp

#define BOOST_PP_LIST_TRANSFORM_D(D,OP,DATA,LIST)

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

Revised

© Copyright Housemarque Oy 2002

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