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1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___TYPE_TRAITS_MAYBE_CONST_H
10#define _LIBCPP___TYPE_TRAITS_MAYBE_CONST_H
11
12#include <__config>
13#include <__type_traits/conditional.h>
14
15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16# pragma GCC system_header
17#endif
18
19_LIBCPP_BEGIN_NAMESPACE_STD
20
21template <bool _Const, class _Tp>
22using __maybe_const _LIBCPP_NODEBUG = __conditional_t<_Const, const _Tp, _Tp>;
23
24_LIBCPP_END_NAMESPACE_STD
25
26#endif // _LIBCPP___TYPE_TRAITS_MAYBE_CONST_H
27

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source code of libcxx/include/__type_traits/maybe_const.h