[FIXED] Is it possible to call a lambda from another lambda?

Issue

I'm trying to call a lambda from another lambda in this way:

fun fetch(
  onSuccess: (result: Any, onSet: () -> Unit) -> Unit
) {
  remoteConfigInstance.fetchAndActivate()
    .addOnCompleteListener { task ->
      if (task.isSuccessful) onSuccess(task.result, ()) // <- Here is the issue 
    }
}

I get an error trying to call the onSet lambda like this. Is there a correct approach to solve this problem?

Solution

the problem is simply that () is not a lambda. Replace it with {}

Answered By - Ivo Beckers
Answer Checked By - Katrina (JavaFixing Volunteer)