Pings target whenever source emits a value. The value itself is ignored, it just acts as a trigger.
target
source
Returns a new stream capturing the output of target.
It source or target closes, output stream closes too.
Pings
targetwheneversourceemits a value. The value itself is ignored, it just acts as a trigger.Returns a new stream capturing the output of
target.It
sourceortargetcloses, output stream closes too.