整理

include/boost/functional/identity.hpp

@@ -0,0 +1,17 @@
+/*
+Copyright 2021 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_FUNCTIONAL_IDENTITY_HPP
+#define BOOST_FUNCTIONAL_IDENTITY_HPP
+
+/*
+The header file at this path is deprecated;
+use <boost/core/identity.hpp> instead.
+*/
+#include <boost/core/identity.hpp>
+
+#endif