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_SIZE_D

BOOST_VMD_SIZE_D — Returns the size of a sequence. Re-entrant version.

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

BOOST_VMD_SIZE_D(d, sequence)

d = The next available BOOST_PP_WHILE iteration.
sequence = A sequence to test.

returns = If the sequence is empty returns 0, else returns the number of elements in the sequence.