plus.h

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#pragma once
 
#include "di/function/curry_back.h"
#include "di/util/forward.h"
 
namespace di::function {
struct Plus {
    template<typename T, typename U>
    requires(requires(T&& a, U&& b) { util::forward<T>(a) + util::forward<U>(b); })
    constexpr auto operator()(T&& a, U&& b) const -> decltype(auto) {
        return util::forward<T>(a) + util::forward<U>(b);
    }
};
 
constexpr inline auto plus = function::curry_back(Plus {}, meta::c_<2ZU>);
}
 
namespace di {
using function::plus;
using function::Plus;
}