/* Copyright (c) 2020 Percona LLC and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef EXT_OPTIONAL_HPP #define EXT_OPTIONAL_HPP #include namespace ext { // TODO: the following 'using' directive can be changed to // using std::optional; // once MySQL source code switches to c++17 using boost::optional; } // namespace ext #endif