public static IAsyncObservable <Single?> Average(this IAsyncObservable <Single?> source) { if (source == null) { throw new ArgumentNullException(nameof(source)); } return(Create <Single?>(observer => source.SubscribeSafeAsync(AsyncObserver.AverageNullableSingle(observer)))); }
public static IAsyncObservable <Single?> Average <TSource>(this IAsyncObservable <TSource> source, Func <TSource, Task <Single?> > selector) { if (source == null) { throw new ArgumentNullException(nameof(source)); } if (selector == null) { throw new ArgumentNullException(nameof(selector)); } return(Create <Single?>(observer => source.SubscribeSafeAsync(AsyncObserver.AverageNullableSingle(observer, selector)))); }