unpack.h

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#pragma once
 
#include "di/function/invoke.h"
#include "di/meta/core.h"
#include "di/types/prelude.h"
 
namespace di::function {
namespace detail {
    template<typename Ind>
    struct UnpackFunction {};
 
    template<auto... values>
    struct UnpackFunction<meta::ListV<values...>> {
        template<typename F>
        requires(concepts::Invocable<F&, meta::ListV<values...>>)
        constexpr auto operator()(F&& function) const -> decltype(auto) {
            return function::invoke(function, meta::ListV<values...> {});
        }
    };
 
}
 
template<typename Seq>
constexpr inline auto unpack = detail::UnpackFunction<Seq> {};
}