Function make

src/opr/impl/loop/grad.cpp:327–330

! * \param var the vars whose grads should be overwritten * \param grad the vars to provide grad * \brief return a placeholder scalar var to get grad w.r.t. inputs */

     * \brief return a placeholder scalar var to get grad w.r.t. inputs
     */
    static SymbolVar make(ComputingGraph* graph, GradInfoArray&& grad) {
        return graph->insert_opr(std::make_unique<GradProxy>(graph, std::move(grad)))
                ->output(0);
    }

private:
    GradInfoArray m_grad;