1 2 #ifndef BOOST_MPL_INDEX_OF_HPP_INCLUDED 3 #define BOOST_MPL_INDEX_OF_HPP_INCLUDED 4 5 // Copyright Aleksey Gurtovoy 2003-2004 6 // Copyright Eric Friedman 2003 7 // 8 // Distributed under the Boost Software License, Version 1.0. 9 // (See accompanying file LICENSE_1_0.txt or copy at 10 // http://www.boost.org/LICENSE_1_0.txt) 11 // 12 // See http://www.boost.org/libs/mpl for documentation. 13 14 // $Id$ 15 // $Date$ 16 // $Revision$ 17 18 #include <boost/mpl/index_if.hpp> 19 #include <boost/mpl/same_as.hpp> 20 #include <boost/mpl/aux_/na_spec.hpp> 21 #include <boost/mpl/aux_/lambda_support.hpp> 22 23 namespace boost { namespace mpl { 24 25 template< 26 typename BOOST_MPL_AUX_NA_PARAM(Sequence) 27 , typename BOOST_MPL_AUX_NA_PARAM(T) 28 > 29 struct index_of 30 : index_if< Sequence,same_as<T> > 31 { 32 BOOST_MPL_AUX_LAMBDA_SUPPORT(2,index_of,(Sequence,T)) 33 }; 34 35 BOOST_MPL_AUX_NA_SPEC(2, index_of) 36 37 }} 38 39 #endif // BOOST_MPL_INDEX_OF_HPP_INCLUDED 40