public static IAsyncObservable <Double?> Average(this IAsyncObservable <Int64?> source)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
return(Create <Double?>(observer => source.SubscribeSafeAsync(AsyncObserver.AverageNullableInt64(observer))));
}
public static IAsyncObservable <Double?> Average <TSource>(this IAsyncObservable <TSource> source, Func <TSource, Task <Int64?> > selector)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (selector == null)
{
throw new ArgumentNullException(nameof(selector));
}
return(Create <Double?>(observer => source.SubscribeSafeAsync(AsyncObserver.AverageNullableInt64(observer, selector))));
}
