indexOf method

int indexOf(
  1. RenderBox child
)

Returns the index of the given child, as given by the MultiSliverMultiBoxAdaptorParentData.index field of the child's parentData.

Implementation

int indexOf(RenderBox child) {
  final childParentData =
      child.parentData! as MultiSliverMultiBoxAdaptorParentData;
  assert(childParentData.index != null);
  return childParentData.index!;
}