)}

Observable.IsEmpty(IObservable) method¶

Defined in

Type: Observable Namespace: System.Reactive.Linq Assembly: System.Reactive.dll

Applies to

netstandard2.0

public static IObservable<bool> IsEmpty<TSource>(this IObservable<TSource> source)

Summary: Determines whether an observable sequence is empty.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.

Parameters

Name	Type	Description
`source`	IObservable	An observable sequence to check for emptiness.

Returns: IObservable -- An observable sequence containing a single element determining whether the source sequence is empty.

Exceptions

Type	Condition
System.ArgumentNullException	`source` is null.