BOOST_MPL_LIMIT_SET_SIZE

Synopsis

#if !defined(BOOST_MPL_LIMIT_SET_SIZE)
#   define BOOST_MPL_LIMIT_SET_SIZE \
        implementation-defined integral constant \
/**/
#endif

Description

BOOST_MPL_LIMIT_SET_SIZE is an overridable configuration macro regulating the maximum arity of the set's and set_c's variadic forms. In this implementation of the library, BOOST_MPL_LIMIT_SET_SIZE has a default value of 20. To override the default limit, define BOOST_MPL_LIMIT_SET_SIZE to the desired maximum arity rounded up to the nearest multiple of ten before including any library header. [Note: Overriding will take effect only if the library is configured not to use preprocessed headers. See BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS for more information. — end note]

Example

#define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
#define BOOST_MPL_LIMIT_SET_SIZE 10
#include <boost/mpl/set.hpp>

using namespace boost::mpl;

typedef set_c<int,1> s_1;
typedef set_c<int,1,2,3,4,5,6,7,8,9,10> s_10;
// typedef set_c<int,1,2,3,4,5,6,7,8,9,10,11> s_11; // error!

See also

Configuration, BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS, BOOST_MPL_LIMIT_MAP_SIZE