removeAt method

AbstractControl<T> removeAt(
  1. int index, {
  2. bool emitEvent = true,
  3. bool updateParent = true,
})

Removes and returns the child control at the given index.

The argument index is the index position of the child control to remove.

When updateParent is true or not supplied (the default) each change affects this control and its parent, otherwise only affects to this control.

When emitEvent is true or not supplied (the default), both the statusChanges and valueChanges emit events with the latest status and value when the control is reset. When false, no events are emitted.

Implementation

AbstractControl<T> removeAt(
  int index, {
  bool emitEvent = true,
  bool updateParent = true,
}) {
  final removedControl = _controls.removeAt(index);
  removedControl.parent = null;
  updateValueAndValidity(emitEvent: emitEvent, updateParent: updateParent);

  if (emitEvent) {
    emitsCollectionChanged(_controls);
  }

  return removedControl;
}