2 //===-------------------------- optional ----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP_EXPERIMENTAL_OPTIONAL
11 #define _LIBCPP_EXPERIMENTAL_OPTIONAL
15 #ifdef _LIBCPP_WARNING
16 _LIBCPP_WARNING("<experimental/optional> has been removed. Use <optional> instead.")
18 # warning "<experimental/optional> has been removed. Use <optional> instead."
21 #endif // _LIBCPP_EXPERIMENTAL_OPTIONAL