to_underlying.h

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#pragma once
 
#include "di/meta/language.h"
 
namespace di::util {
namespace detail {
    struct ToUnderlyingFunction {
        template<concepts::Enum T>
        constexpr auto operator()(T value) const {
            return static_cast<meta::UnderlyingType<T>>(value);
        }
    };
}
 
constexpr inline auto to_underlying = detail::ToUnderlyingFunction {};
}
 
namespace di {
using util::to_underlying;
}