numberOfChildren(ofItem:)

Declaration

func numberOfChildren(ofItem item: Any?) -> Int

Parameters

• item:

  The parent item.

Return Value

The number of children associated with the parent.

Discussion

You can call this method on an outline view with either a static or dynamic data source. For an outline view whose contents are dynamic, this method may call out to the outlineView(_:numberOfChildrenOfItem:) method of the associated data source object.

See Also

Getting Related Items

• parent(forItem:)
• childIndex(forItem:)
• child(_:ofItem:)