observer method

Widget observer(
  1. int toBeAccessedIndex
)

Implementation

Widget observer(int toBeAccessedIndex) {
  if (listenable.length <= toBeAccessedIndex) return listener();
  return Observer(
    listenable: listenable[toBeAccessedIndex],
    listener: (e) {
      return observer(toBeAccessedIndex + 1);
    },
  );
}