insertionReplaces
Returns a Boolean value that indicates whether evaluation has been successful and the object to be inserted should actually replace the keyed, indexed object in the insertion container.
Declaration
var insertionReplaces: Bool { get }Return Value
true if evaluation has been successful and the object to be inserted should actually replace the keyed, indexed object in the insertion container, instead of being inserted before it; false otherwise.
Discussion
If this object has never been evaluated, evaluation is attempted.