EVOLUTION-MANAGER

Edit File: is_index_list.hpp

/* Copyright 2003-2013 Joaquin M Lopez Munoz. * Distributed under the Boost Software License, Version 1.0. * (See accompanying file LICENSE_1_0.txt or copy at * http://www.boost.org/LICENSE_1_0.txt) * * See http://www.boost.org/libs/multi_index for library home page. */ #ifndef BOOST_MULTI_INDEX_DETAIL_IS_INDEX_LIST_HPP #define BOOST_MULTI_INDEX_DETAIL_IS_INDEX_LIST_HPP #if defined(_MSC_VER) #pragma once #endif #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ #include <boost/mpl/empty.hpp> #include <boost/mpl/is_sequence.hpp> namespace boost{ namespace multi_index{ namespace detail{ template<typename T> struct is_index_list { BOOST_STATIC_CONSTANT(bool,mpl_sequence=mpl::is_sequence<T>::value); BOOST_STATIC_CONSTANT(bool,non_empty=!mpl::empty<T>::value); BOOST_STATIC_CONSTANT(bool,value=mpl_sequence&&non_empty); }; } /* namespace multi_index::detail */ } /* namespace multi_index */ } /* namespace boost */ #endif