1[/ 2 Boost.Optional 3 4 Copyright (c) 2003-2007 Fernando Luis Cacciola Carballal 5 Copyright (c) 2015 Andrzej Krzemienski 6 7 Distributed under the Boost Software License, Version 1.0. 8 (See accompanying file LICENSE_1_0.txt or copy at 9 http://www.boost.org/LICENSE_1_0.txt) 10] 11 12[section Header <boost/optional.hpp>] 13 14This is an alias for header [link boost_optional.reference.header__boost_optional_optional_hpp_.header_optional_optional `<boost/optional/optional.hpp>`]. 15 16 17[endsect] 18