BOOST_PP_ARRAY_REPLACE

The BOOST_PP_ARRAY_REPLACE macro replaces an element in an array.

Usage

BOOST_PP_ARRAY_REPLACE(array, i, elem)

Arguments

• array : An array to replace an element in.

• i : The zero-based position in array of the element to be replaced. Valid values range from 0 to BOOST_PP_ARRAY_SIZE(array) - 1.

• elem : The replacement element.

Remarks

This macro uses BOOST_PP_WHILE interally. Therefore, to use the d parameter passed from other macros that use BOOST_PP_WHILE, see BOOST_PP_ARRAY_REPLACE_D.

See Also

• BOOST_PP_ARRAY_REPLACE_D

Requirements

Header: <boost/preprocessor/array/replace.hpp>

Sample Code

#include <boost/preprocessor/array/replace.hpp>

# define ARRAY (3, (a, x, c))

BOOST_PP_ARRAY_REPLACE(ARRAY, 1, b) // expands to (3, (a, b, c))