public IDisposable Subscribe(IObserver <Func <T> > observer)
{
IDisposable subscription = this.owner.lazyPropertyChangeStream.Subscribe(observer);
ObservableExpression.PushValueInUpToDateContext(() => observer.OnNext(this.owner.observedExpressionCompiled));
return(subscription);
}
public IDisposable Subscribe(IObserver <T> observer)
{
//First, subscribe the observer, so that property handlers are attached.
//This is important in case of a cyclic reference. Without handlers in
//place cyclic referencing would not occur, even though it should.
//Then, publish a value immediately, so that an initial value can be set.
//Notice the current value is only passed to the new observer.
//Subscribers present until now are NOT given this value again.
IDisposable subscription = this.propertyChangeStream.Subscribe(observer);
ObservableExpression.PushValueInUpToDateContext(() => observer.OnNext(this.observedExpressionCompiled()));
//try
//{
//observer.OnNext(this.observedExpressionCompiled());
//}
//catch (Exception ex)
//{
//}
return(subscription);
}
/// <summary>
/// Initializes a new instance of the <see cref="T:LazyChannel"/> class.
/// </summary>
public LazyChannel(ObservableExpression <T> owner)
{
this.owner = owner;
}