1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___FORMAT_ENABLE_INSERTABLE_H
11 #define _LIBCPP___FORMAT_ENABLE_INSERTABLE_H
12 
13 #include <__config>
14 
15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16 #  pragma GCC system_header
17 #endif
18 
19 _LIBCPP_BEGIN_NAMESPACE_STD
20 
21 #if _LIBCPP_STD_VER > 17
22 
23 namespace __format {
24 
25 /// Opt-in to enable \ref __insertable for a \a _Container.
26 template <class _Container>
27 inline constexpr bool __enable_insertable = false;
28 
29 } // namespace __format
30 
31 #endif //_LIBCPP_STD_VER > 17
32 
33 _LIBCPP_END_NAMESPACE_STD
34 
35 #endif // _LIBCPP___FORMAT_ENABLE_INSERTABLE_H
36