race
Mirrors the one Flow in an array of several Flows that first either emits a value or sends a termination event (error or complete event).
See also
Mirrors the one Flow in an Iterable of several Flows that first either emits a value or sends a termination event (error or complete event).
When you pass a number of source Flows to race, it will pass through the emissions and events of exactly one of these Flows: the first one that sends an event to race, either by emitting a value or sending an error or complete event. race will cancel the emissions and events of all of the other source Flows.