xref: /llvm-project/libcxx/include/__cxx03/__format/enable_insertable.h (revision ce7771902dc50d900de639d499a60486b83f70e0)
1e78f53d1SNikolas Klauser // -*- C++ -*-
2e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===//
3e78f53d1SNikolas Klauser //
4e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information.
6e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7e78f53d1SNikolas Klauser //
8e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===//
9e78f53d1SNikolas Klauser 
10*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___FORMAT_ENABLE_INSERTABLE_H
11*ce777190SNikolas Klauser #define _LIBCPP___CXX03___FORMAT_ENABLE_INSERTABLE_H
12e78f53d1SNikolas Klauser 
1373fbae83SNikolas Klauser #include <__cxx03/__config>
14e78f53d1SNikolas Klauser 
15e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16e78f53d1SNikolas Klauser #  pragma GCC system_header
17e78f53d1SNikolas Klauser #endif
18e78f53d1SNikolas Klauser 
19e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD
20e78f53d1SNikolas Klauser 
21e78f53d1SNikolas Klauser #if _LIBCPP_STD_VER >= 20
22e78f53d1SNikolas Klauser 
23e78f53d1SNikolas Klauser namespace __format {
24e78f53d1SNikolas Klauser 
25e78f53d1SNikolas Klauser /// Opt-in to enable \ref __insertable for a \a _Container.
26e78f53d1SNikolas Klauser template <class _Container>
27e78f53d1SNikolas Klauser inline constexpr bool __enable_insertable = false;
28e78f53d1SNikolas Klauser 
29e78f53d1SNikolas Klauser } // namespace __format
30e78f53d1SNikolas Klauser 
31e78f53d1SNikolas Klauser #endif //_LIBCPP_STD_VER >= 20
32e78f53d1SNikolas Klauser 
33e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD
34e78f53d1SNikolas Klauser 
35*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___FORMAT_ENABLE_INSERTABLE_H
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