variant_visitor.hpp

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// Copyright 2024 Man Group Operations Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
 
#pragma once
 
namespace sparrow
{
    template <class... Ts>
    struct overloaded : Ts...
    {
        using Ts::operator()...;
    };
    // Although not required in C++20, clang needs it to build where it is used.
    template <class... Ts>
    overloaded(Ts...) -> overloaded<Ts...>;
}