boost/type_traits/is_same.hpp
// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, // Howard Hinnant and John Maddock 2000. // (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001 // Use, modification and distribution are subject to 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/type_traits for most recent version including documentation. // Fixed is_pointer, is_reference, is_const, is_volatile, is_same, // is_member_pointer based on the Simulated Partial Specialization work // of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or // http://groups.yahoo.com/group/boost/message/5441 // Some workarounds in here use ideas suggested from "Generic<Programming>: // Mappings between Types and Values" // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). #ifndef BOOST_TT_IS_SAME_HPP_INCLUDED #define BOOST_TT_IS_SAME_HPP_INCLUDED #include <boost/type_traits/config.hpp> // should be the last #include #include <boost/type_traits/detail/bool_trait_def.hpp> namespace boost { BOOST_TT_AUX_BOOL_TRAIT_DEF2(is_same,T,U,false) BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_1(typename T,is_same,T,T,true) #if BOOST_WORKAROUND(__BORLANDC__, < 0x600) // without this, Borland's compiler gives the wrong answer for // references to arrays: BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_1(typename T,is_same,T&,T&,true) #endif } // namespace boost #include <boost/type_traits/detail/bool_trait_undef.hpp> #endif // BOOST_TT_IS_SAME_HPP_INCLUDED