NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
API Documentation
optional.hpp
Go to the documentation of this file.
1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2013-2021 Regents of the University of California.
4  *
5  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
6  *
7  * ndn-cxx library is free software: you can redistribute it and/or modify it under the
8  * terms of the GNU Lesser General Public License as published by the Free Software
9  * Foundation, either version 3 of the License, or (at your option) any later version.
10  *
11  * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
12  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13  * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14  *
15  * You should have received copies of the GNU General Public License and GNU Lesser
16  * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
17  * <http://www.gnu.org/licenses/>.
18  *
19  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
20  */
21 
22 #ifndef NDN_CXX_UTIL_OPTIONAL_HPP
23 #define NDN_CXX_UTIL_OPTIONAL_HPP
24 
25 #define optional_CONFIG_SELECT_OPTIONAL optional_OPTIONAL_NONSTD
27 
28 namespace ndn {
29 
30 using ::nonstd::optional;
31 using ::nonstd::bad_optional_access;
33 using ::nonstd::nullopt_t;
35 
37 using ::nonstd::in_place_t;
38 
39 } // namespace ndn
40 
41 #endif // NDN_CXX_UTIL_OPTIONAL_HPP
Copyright (c) 2011-2015 Regents of the University of California.
optional< T > make_optional(T const &value)
const nullopt_t nullopt((nullopt_t::init()))
in_place_t in_place(detail::in_place_type_tag< T >=detail::in_place_type_tag< T >())
Definition: any-lite.hpp:141