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25 lines
569 B
C
25 lines
569 B
C
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// Copyright 2021 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_AS_CONST_H_
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#define BASE_AS_CONST_H_
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#include <type_traits>
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namespace base {
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// C++14 implementation of C++17's std::as_const():
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// https://en.cppreference.com/w/cpp/utility/as_const
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template <typename T>
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constexpr std::add_const_t<T>& as_const(T& t) noexcept {
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return t;
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}
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template <typename T>
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void as_const(const T&& t) = delete;
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} // namespace base
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#endif // BASE_AS_CONST_H_
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