How do I get the ---last--- element of a `Flow` wi...

# coroutines

[dave08]

How do I get the ---last--- element of a Flow without having to use toList().last() ...?

[jw]

something like

suspend fun <T> Flow<T>.last(): T? {
  var last: T? = null
  collect {
    last = it
  }
  return last
}

[dave08]

Thanks!

[jw]

you could also do

suspend fun <T> Flow<T>.last(): T {
  val marker = Any()
  var last: Any? = marker
  collect {
    last = it
  }
  if (last === marker) throw NoSuchElementException()
  return last as T
}

[jw]

depends on the behavior you want

[dave08]

Nice 🙂! I also didn't know that Any() could be instantiated and used like that... also good to know!