pub unsafe static kMDQueryUpdateChangedItems: Option<&'static CFString>Available on crate feature
MDQuery only.Expand description
The name of the key in a query notification’s info dictionary which identifies the list of changed results. A result is changed if the file contents or some metadata attribute of it is changed, but it still matches the query. The list only contains result objects which have previously been created, and does not indicate results which have been changed for which result objects have not been created. [[This is for performance reasons, to avoid creating result objects just to represent a change of a result which has not been looked at, but this semantic may change.]]
See also Apple’s documentation