unified_base.hpp

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//          Copyright Dominic Koepke 2019 - 2023.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          https://www.boost.org/LICENSE_1_0.txt)
 
#ifndef SL_UTILITY_UNIFIED_BASE_HPP
#define SL_UTILITY_UNIFIED_BASE_HPP
 
#pragma once
 
#include <concepts>
#include <type_traits>
 
namespace sl
{
    template <class TTag>
        requires std::is_class_v<TTag> && std::same_as<TTag, std::remove_cvref_t<TTag>>
    struct unified_base
    {};
 
    template <class T, class TTag>
    concept derived_from_unified_base = std::is_base_of_v<unified_base<TTag>, std::remove_cvref_t<T>>; 
}
 
#endif