Delegates
Functions
notNull
Returns a property delegate for a read/write property with a non-null
value that is initialized not during
object construction time but at a later time. Trying to read the property before the initial value has been
assigned results in an exception.
fun <T : Any> notNull(): ReadWriteProperty<Any?, T>
observable
Returns a property delegate for a read/write property that calls a specified callback function when changed.
fun <T> observable(
initialValue: T,
onChange: (property: KProperty<*>, oldValue: T, newValue: T) -> Unit
): ReadWriteProperty<Any?, T>
vetoable
Returns a property delegate for a read/write property that calls a specified callback function when changed, allowing the callback to veto the modification.
fun <T> vetoable(
initialValue: T,
onChange: (property: KProperty<*>, oldValue: T, newValue: T) -> Boolean
): ReadWriteProperty<Any?, T>