43bc1e5600
The changes from the One Ranges Proposal amount to adding: - a constructor that takes a `default_sentinel_t` and is equivalent to the default constructor; - an `operator==` that compares the iterator to `default_sentinel_t`. The original proposal defined two overloads for `operator==` (different argument order) as well as `operator!=`. This has been removed by [P1614](https://wg21.link/p1614). Differential Revision: https://reviews.llvm.org/D119620
31 lines
835 B
C++
31 lines
835 B
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H
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#define _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H
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#include <__config>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER > 17
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struct default_sentinel_t { };
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inline constexpr default_sentinel_t default_sentinel{};
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#endif // _LIBCPP_STD_VER > 17
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H
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