ObservableValue

class ObservableValue<T>(initialValue: T) : Observable<T>

Another way to implement observable delegation. When the observed value property is changed, observers are notified.

Constructors

constructor(initialValue: T)

open override fun attachObserver(observer: ObserverIfc<T>)

Allows the adding (attaching) of an observer to the observable

open override fun countObservers(): Int

Returns how many observers are currently attached to the observable

open override fun detachAllObservers()

Detaches all the observers from the observable

open override fun detachObserver(observer: ObserverIfc<T>)

Allows the deletion (removing) of an observer from the observable

open override fun isAttached(observer: ObserverIfc<T>): Boolean

Returns true if the observer is already attached

fun <T> Observable<T>.observe(block: (T?) -> Unit)