See: Description
| Class | Description | 
|---|---|
| ImmediateScheduler | Deprecated This type was never publicly instantiable. | 
| NewThreadScheduler | Deprecated This type was never publicly instantiable. | 
| Schedulers | Static factory methods for creating Schedulers. | 
| TestScheduler | The  TestScheduleris useful for debugging. | 
| TimeInterval<T> | A  TimeIntervalrepresents an item emitted by anObservablealong with the amount of time that
 elapsed either since the emission of the previous item or (if there was no previous item) since theObservablewas first subscribed to. | 
| Timestamped<T> | Composite class that takes a value and a timestamp and wraps them. | 
| TrampolineScheduler | Deprecated This type was never publicly instantiable. |