整理

include/boost/core/detail/is_same.hpp

@@ -0,0 +1,39 @@
+#ifndef BOOST_CORE_DETAIL_IS_SAME_HPP_INCLUDED
+#define BOOST_CORE_DETAIL_IS_SAME_HPP_INCLUDED
+
+// is_same<T1,T2>::value is true when T1 == T2
+//
+// Copyright 2014 Peter Dimov
+//
+// 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
+
+#include <boost/config.hpp>
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+#endif
+
+namespace boost
+{
+namespace core
+{
+namespace detail
+{
+
+template< class T1, class T2 > struct is_same
+{
+    BOOST_STATIC_CONSTANT( bool, value = false );
+};
+
+template< class T > struct is_same< T, T >
+{
+    BOOST_STATIC_CONSTANT( bool, value = true );
+};
+
+} // namespace detail
+} // namespace core
+} // namespace boost
+
+#endif // #ifndef BOOST_CORE_DETAIL_IS_SAME_HPP_INCLUDED