mirror of https://github.com/facebook/rocksdb.git
24 lines
711 B
C++
24 lines
711 B
C++
// Copyright (c) Meta Platforms, Inc. and affiliates.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include "rocksdb/rocksdb_namespace.h"
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namespace ROCKSDB_NAMESPACE {
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// A helper template that can combine multiple functors into a single one to be
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// used with std::visit for example. It also works with lambdas, since it
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// comes with an explicit deduction guide.
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template <typename... Ts>
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struct overload : Ts... {
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using Ts::operator()...;
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};
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template <typename... Ts>
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overload(Ts...) -> overload<Ts...>;
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} // namespace ROCKSDB_NAMESPACE
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