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Qbservable.IsEmpty(IQbservable) method

Defined in

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

Applies to

netstandard2.0

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

Summary: Determines whether an observable sequence is empty.

Type parameters

NameDescription
TSourceThe type of the elements in the source sequence.

Parameters

NameTypeDescription
source[IQbservable](#An observable sequence to check for emptiness.

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

Exceptions

TypeCondition
System.ArgumentNullExceptionsource is null.