An example would be I wanted to write a wrapper function to show a busy dialog before code excution, and dismiss the dialog when execution done (to avoid forgetting to dismiss).
Instead of
val dialog = BusyDialog()dialog.show()// excute some codedialog.dismiss()Code
fun <R> showBusy(dialog: BusyDialog, block: () -> R): R { val dialog = BusyDialog.show() return block().apply { dialog.dismiss() }}Usage
showBusy(BusyDialog()) { // excute some code}