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