The BOOST_PP_ENUM_SHIFTED_PARAMS macro generates a comma-separated, shifted list of parameters.

Usage

BOOST_PP_ENUM_SHIFTED_PARAMS(count, param)

Arguments

count
The number of parameters to generate.  Valid values range from 0 to BOOST_PP_LIMIT_REPEAT.
param
The text of the parameter.  BOOST_PP_ENUM_SHIFTED_PARAMS concatenates numbers ranging from 1 to count - 1 to generate parameters.

Remarks

This macro expands to the comma-separated sequence:
param ## 1, ... param ## count - 1
This macro facilitates a typical usage of the library.  Shifted parameter lists are common in template metaprograms.
To use the z parameter passed from other macros that use BOOST_PP_REPEAT, see BOOST_PP_ENUM_SHIFTED_PARAMS_Z.
Previously, this macro could not be used recursively inside BOOST_PP_REPEAT.  This limitation no longer exists, as the library can automatically detect the next available repetition depth.

See Also

Requirements

Header:  <boost/preprocessor/repetition/enum_shifted_params.hpp>

Sample Code

#include <boost/preprocessor/repetition/enum_shifted_params.hpp>

BOOST_PP_ENUM_SHIFTED_PARAMS(3, class T) // expands to class T1, class T2
© Copyright Housemarque Oy 2002
© Copyright Paul Mensonides 2002

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)