boost/url/optional.hpp

0001 //
0002 // Copyright (c) 2022 Vinnie Falco (vinnie.falco@gmail.com)
0003 //
0004 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0005 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 //
0007 // Official repository: https://github.com/boostorg/url
0008 //
0009
0010 #ifndef BOOST_URL_OPTIONAL_HPP
0011 #define BOOST_URL_OPTIONAL_HPP
0012
0013 #include <boost/url/detail/config.hpp>
0014 #include <boost/optional.hpp>
0015
0016 namespace boost {
0017 namespace urls {
0018
0019 /** The type of optional used by the library
0020
0021     @note This alias is no longer supported and
0022     should not be used in new code. Please use
0023     `boost::optional` instead.
0024
0025     This alias is included for backwards
0026     compatibility with earlier versions of the
0027     library.
0028
0029     However, it will be removed in future releases,
0030     and using it in new code is not recommended.
0031
0032     Please use the updated version instead to
0033     ensure compatibility with future versions of
0034     the library.
0035
0036 */
0037 #ifndef BOOST_URL_DOCS
0038 template<class T>
0039 using optional
0040     BOOST_URL_DEPRECATED("Use boost::optional<T> instead") =
0041     boost::optional<T>;
0042 #else
0043 template<class T>
0044 using optional = boost::optional<T>;
0045 #endif
0046
0047 } // urls
0048 } // boost
0049
0050 #endif