Observable

Observable.MostRecent<TSource> Method

Samples the most recent value in an observable sequence.

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

Syntax

'Declaration
<ExtensionAttribute> _
Public Shared Function MostRecent(Of TSource) ( _
    source As IObservable(Of TSource), _
    initialValue As TSource _
) As IEnumerable(Of TSource)
'Usage
Dim source As IObservable(Of TSource)
Dim initialValue As TSource
Dim returnValue As IEnumerable(Of TSource)

returnValue = source.MostRecent(initialValue)
public static IEnumerable<TSource> MostRecent<TSource>(
    this IObservable<TSource> source,
    TSource initialValue
)
[ExtensionAttribute]
public:
generic<typename TSource>
static IEnumerable<TSource>^ MostRecent(
    IObservable<TSource>^ source, 
    TSource initialValue
)
static member MostRecent : 
        source:IObservable<'TSource> * 
        initialValue:'TSource -> IEnumerable<'TSource> 
JScript does not support generic types and methods.

Type Parameters

  • TSource
    The type of source.

Parameters

  • source
    Type: System.IObservable<TSource>
    The source observable sequence.

  • initialValue
    Type: TSource
    The initial value that will be yielded by the enumerable sequence if no element has been sampled yet.

Return Value

Type: System.Collections.Generic.IEnumerable<TSource>
The enumerable sequence that returns the last sampled element upon each iteration.

Usage Note

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

See Also

Reference

Observable Class

System.Reactive.Linq Namespace