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//===---------------------------------------------------------------------===//
//
// 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
//
//===---------------------------------------------------------------------===//
#ifndef _LIBCPP___FWD_SUBRANGE_H
#define _LIBCPP___FWD_SUBRANGE_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if _LIBCPP_STD_VER >= 20
#include <__iterator/concepts.h>
_LIBCPP_BEGIN_NAMESPACE_STD
namespace ranges {
enum class _LIBCPP_ENUM_VIS subrange_kind : bool { unsized, sized };
template <input_or_output_iterator _Iter, sentinel_for<_Iter> _Sent, subrange_kind _Kind>
requires(_Kind == subrange_kind::sized || !sized_sentinel_for<_Sent, _Iter>)
class _LIBCPP_TEMPLATE_VIS subrange;
} // namespace ranges
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER >= 20
#endif // _LIBCPP___FWD_SUBRANGE_H
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