Dataframe.use(...)

This function allow the user to opt-out of or eject from using the pre-defined filter functions, to perform user specified computation and return a Dataframe

Parameters

• callback: (object: Array<Record<string, unknown>>) => Dataframe - this callback function gives you the ability to perform whatever computation needed and must return a Dataframe at the end; here you can even use other external libraries

Returns

• Dataframe<T>

const has_question_mark: Dataframe<T> = df.use((obj) => {
  const filtered = obj.filter((object) => Object.values(object).some((value) => value === "?"));
  return new Dataframe(filtered);
});