Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Macro BOOST_VMD_TUPLE_SIZE

BOOST_VMD_TUPLE_SIZE — expands to the size of the tuple passed to it.

// In header: <boost/vmd/tuple/size.hpp>

BOOST_VMD_TUPLE_SIZE(tuple)

tuple = tuple whose size is to be extracted.

If the tuple is an empty tuple its size is 0. Otherwise the result is the number of elements in the tuple.