- What is the difference between subscribeOn and observeOn?
- subscribedOn makes the subscribeBlock run on certain scheduler
- In which events are generated
- observeOn makes the observeBlock run on certain scheduler
- In which user reacts to the elements generated
- How to use dispatchQueue in Swift? How to get certain priority queue?
- DispatchQueue.main.sync/Async()
- DispatchQueue.global(qos: DispatchQos.QoSClass)
- What is the level of QoSClass?
- userInteractive
- userInitiated
- Default
- Utility
- Background
- unspecified
- How to transform range to array?