returns an inert subscriber that does nothing in response to the emissions or notifications fromany observable it subscribes to . this is different , however , from an emptyobserver , in that it will throw an exception if its subscriber #onerror onerror method is called whereas emptyobserver will swallow the error in such a case . concode_field_sep PlaceHolder placeHolder concode_field_sep Subscriber<T> create concode_elem_sep Subscriber<T> create concode_elem_sep Subscriber<T> create concode_elem_sep Subscriber<T> from concode_elem_sep Subscriber<T> wrap
Subscriber < T > function ( ) { return from ( Observers . empty ( ) ) ; }