If i want to call my

search

function after user finish typing (by being idle for >=400ms). is this the correct way to do this with coroutines?

fun onKeywordChanged(keyword: String) {
  keywordJob.cancel()
  keywordJob = launch {
    delay(400)
    if (!isActive) return@launch
    search(keyword)
  }
}

Probably can be rewritten in a much more efficient way without creating additional coroutine on each tick

This looks like to me a good usecase for using csp channels and implement a debouncer on top of them

Yes, writing debounce operator on top of channel of events looks as most obvious solution, but even if you don’t want to use channels you still can write much more optimal version of this code

Sorry I'm a coroutines-noob. 🙂 would you share a little snippet to help me understand your point correctly?

as an aside, the

if (!isActive)

isn't necessary because delay() will resume with an exception if the coroutine is cancelled anyway