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Qbservable.PublishLast<TSource, TResult>()

Qbservable.PublishLast<TSource, TResult> Method

Returns a queryable observable sequence that is the result of invoking the selector on a connectable queryable observable sequence that shares a single subscription to the underlying sequence containing only the last notification.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive.Providers (in System.Reactive.Providers.dll)


<ExtensionAttribute> _
Public Shared Function PublishLast(Of TSource, TResult) ( _
    source As IQbservable(Of TSource), _
    selector As Expression(Of Func(Of IObservable(Of TSource), IObservable(Of TResult))) _
) As IQbservable(Of TResult)
Dim source As IQbservable(Of TSource)
Dim selector As Expression(Of Func(Of IObservable(Of TSource), IObservable(Of TResult)))
Dim returnValue As IQbservable(Of TResult)

returnValue = source.PublishLast(selector)
public static IQbservable<TResult> PublishLast<TSource, TResult>(
    this IQbservable<TSource> source,
    Expression<Func<IObservable<TSource>, IObservable<TResult>>> selector
generic<typename TSource, typename TResult>
static IQbservable<TResult>^ PublishLast(
    IQbservable<TSource>^ source, 
    Expression<Func<IObservable<TSource>^, IObservable<TResult>^>^>^ selector
static member PublishLast : 
        source:IQbservable<'TSource> * 
        selector:Expression<Func<IObservable<'TSource>, IObservable<'TResult>>> -> IQbservable<'TResult> 
JScript does not support generic types and methods.

Type Parameters

  • TSource
    The type of source.

  • TResult
    The type of result.


Return Value

Type: System.Reactive.Linq.IQbservable<TResult>
A queryable observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .

See Also


Qbservable Class

System.Reactive.Linq Namespace