Filters the elements of an observable sequence based on a predicate. This is an alias for the
Function): A function to test each source element for a condition. The callback is called with the following information:
- the value of the element
- the index of the element
- the Observable object being subscribed
Any): Object to use as
thiswhen executing the predicate.
Observable): An observable sequence that contains elements from the input sequence that satisfy the condition.