The BOOST_PP_TUPLE_SIZE macro expands to the size of the tuple passed to it.

Usage

BOOST_PP_TUPLE_SIZE(tuple) (v)

Arguments

tuple
A tuple whose size is to be extracted.

Requirements

Header:  <boost/preprocessor/tuple/size.hpp>

Sample Code

#include <boost/preprocessor/tuple/size.hpp>

#define TUPLE (x, y, z)

BOOST_PP_TUPLE_SIZE(TUPLE) // expands to 3
© Copyright Edward Diener 2011,2013

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at www.boost.org/LICENSE_1_0.txt)