boost/mpl/index_of.hpp

0001
0002 #ifndef BOOST_MPL_INDEX_OF_HPP_INCLUDED
0003 #define BOOST_MPL_INDEX_OF_HPP_INCLUDED
0004
0005 // Copyright Aleksey Gurtovoy 2003-2004
0006 // Copyright Eric Friedman 2003
0007 //
0008 // Distributed under the Boost Software License, Version 1.0.
0009 // (See accompanying file LICENSE_1_0.txt or copy at
0010 // http://www.boost.org/LICENSE_1_0.txt)
0011 //
0012 // See http://www.boost.org/libs/mpl for documentation.
0013
0014 // $Id$
0015 // $Date$
0016 // $Revision$
0017
0018 #include <boost/mpl/index_if.hpp>
0019 #include <boost/mpl/same_as.hpp>
0020 #include <boost/mpl/aux_/na_spec.hpp>
0021 #include <boost/mpl/aux_/lambda_support.hpp>
0022
0023 namespace boost { namespace mpl {
0024
0025 template<
0026       typename BOOST_MPL_AUX_NA_PARAM(Sequence)
0027     , typename BOOST_MPL_AUX_NA_PARAM(T)
0028     >
0029 struct index_of
0030     : index_if< Sequence,same_as<T> >
0031 {
0032     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,index_of,(Sequence,T))
0033 };
0034
0035 BOOST_MPL_AUX_NA_SPEC(2, index_of)
0036
0037 }}
0038
0039 #endif // BOOST_MPL_INDEX_OF_HPP_INCLUDED