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kotlinlang

Hello, does anyone have an idea how to accomplish reply only if changed behavior?
I would like to have something like this:
```
    val replayedObservable = someOperation.replay(1)
    replayedObservable.connect();
    val subscription1 = replayedObservable.subscribe { //here i got some value }
    subscription1.unsubscribe()
    val subscription2 = replayedObservable.subscribe { //here I want to get some value only if it’s different than before }
```
`replay(1).distinctUntilChanged()` doesn’t work because I’m unsubscribing and `distinctUntilChanged()` operator doesn’t remember values between subscriptions.