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kotlinlang

What is the correct way to unsubscribe from a Flow?

`val flow = myFlow()
flow.collect {
  if (it is Success) {
    // I found the value I was waiting for,
    // stop collecting values and go back to executing the function
  }
}`

```flow.transformWhile { it -&gt;
    emit(it)
    return it !is Success
}.collect { ... }```

if you don't need the `Success` value in `collect` you can also use `takeWhile { it !is Success }`

I assume you mean `return@transformWhile` there

if you want the value itself you can do things like
```flow.firstOrNull { it is Success } // doesn't cast to Success?
flow.filterIsInstance&lt;Success&gt;().firstOrNull() // does```

if you don't need the value at all, there's other terminal operators like
```flow.any { it is Success }```

Thanks a lot, I didn't realize `first` `any` etc where available on flow