The BOOST_PP_SLOT macro retrieves a value previously evaluated by BOOST_PP_ASSIGN_SLOT.

Usage

BOOST_PP_SLOT(i)

Arguments

i
The slot index to be retrieved.  This value must be in the range of 1 to BOOST_PP_LIMIT_SLOT_COUNT.

Remarks

Prior to use, the slot at index i must have been assigned with BOOST_PP_ASSIGN_SLOT.

See Also

Requirements

Header:  <boost/preprocessor/slot/slot.hpp>

Sample Code

#include <boost/preprocessor/slot/slot.hpp>

#define X() 4

#define BOOST_PP_VALUE 1 + 2 + 3 + X()
#include BOOST_PP_ASSIGN_SLOT(1)

#undef X

BOOST_PP_SLOT(1) // expands to 10