| //===----------------------------------------------------------------------===// |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| //===----------------------------------------------------------------------===// |
| // [optional.optional], class template optional |
| // [optional.nullopt], no-value state indicator |
| // [optional.bad.access], class bad_optional_access |
| using std::bad_optional_access; |
| // [optional.relops], relational operators |
| // [optional.specalg], specialized algorithms |
| using std::make_optional; |
| // [optional.hash], hash support |