Rx.Observable.prototype.lastOrDefault([predicate], [defaultValue], [thisArg])
Returns the last element of an observable sequence that satisfies the condition in the predicate if specified, else the last element.
predicate
(Function
): A predicate function to evaluate for elements in the source sequence. The callback is called with the following information:
[defaultValue]
(Any
): The default value if no such element exists. If not specified, defaults to null.[thisArg]
(Any
): Object to use as this
when executing the predicate.(Observable
): Sequence containing the last element in the observable sequence that satisfies the condition in the predicate.