public static ObservableLongAverage Create(INotifyEnumerable <long> source)
{
var observable = new ObservableLongAverage(source);
observable.Successors.SetDummy();
return(observable);
}
public static INotifyValue <double> CreateLongExpression <TSource>(this IEnumerableExpression <TSource> source, Expression <Func <TSource, long> > predicate)
{
return(ObservableLongAverage.Create(source.AsNotifiable().Select(predicate)));
}