Type Property

newKey

If the value of the kindKey entry is NSKeyValueChange.setting, and new was specified when the observer was registered, the value of this key is the new value for the attribute.

Declaration

static let newKey: NSKeyValueChangeKey

Discussion

For NSKeyValueChange.insertion or NSKeyValueChange.replacement, if new was specified when the observer was registered, the value for this key is an NSArray instance that contains the objects that have been inserted or replaced other objects, respectively.