Method has_output

oneflow/core/framework/op_expr.cpp:374–378

    return tuple_index >= 0;
  }
  bool has_output(const std::string& arg_name, int32_t index) const override {
    const auto& arg_tuple = *user_op_expr_->output_arg_tuple();
    int32_t tuple_index = arg_tuple.TensorTupleIndex4ArgNameAndIndex(arg_name, index);
    return tuple_index >= 0;
  }
  int32_t input_size(const std::string& arg_name) const override {
    const auto& arg_tuple = *user_op_expr_->input_arg_tuple();
    return arg_tuple.arg_name2bn_index2tensor_tuple_index().at(arg_name).size();