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