public static IObservable <TSource> Concat <TSource>(this IObservable <TSource> first, params IObservable <TSource>[] seconds)
{
if (first == null)
{
throw new ArgumentNullException("first");
}
if (seconds == null)
{
throw new ArgumentNullException("seconds");
}
ConcatObservable <TSource> concat = first as ConcatObservable <TSource>;
if (concat != null)
{
return(concat.Combine(seconds));
}
return(Concat(CombineSources(first, seconds)));
}
public Concat(ConcatObservable <T> parent, IObserver <T> observer, IDisposable cancel)
: base(observer, cancel)
{
this.parent = parent;
}
