我在操场上玩 RxSwift 时遇到了警告。这是完整的警告消息：
Synchronization anomaly was detected.
- Debugging: To debug this issue you can set a breakpoint in RxSwift/RxSwift/Rx.swift:113 and observe the call stack.
Problem: This behavior is breaking the observable sequence grammar. `next (error | completed)?`
- This behavior breaks the grammar because there is overlapping between sequence events.
Observable sequence is trying to send an event before sending of previous event has finished.
- Interpretation: Two different unsynchronized threads are trying to send some event simultaneously.
This …