C++ Boost

Boost.Preprocessor

Header <boost/preprocessor/expr_if.hpp>


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#define BOOST_PP_EXPR_IF(COND,EXPR)

Expands to EXPR if COND != 0 and to nothing if COND == 0.

COND must expand to an integer literal in the range [0, BOOST_PP_LIMIT_MAG].

For example, BOOST_PP_EXPR_IF(1,^) expands to ^.

See


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Revised

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