Observable.Scan<TSource> Method (IObservable<TSource>, Func<TSource, TSource, TSource>)

Namespace:  Microsoft.Phone.Reactive
Assembly:  Microsoft.Phone.Reactive (in Microsoft.Phone.Reactive.dll)


<ExtensionAttribute> _
Public Shared Function Scan(Of TSource) ( _
    source As IObservable(Of TSource), _
    accumulator As Func(Of TSource, TSource, TSource) _
) As IObservable(Of TSource)
public static IObservable<TSource> Scan<TSource>(
    this IObservable<TSource> source,
    Func<TSource, TSource, TSource> accumulator
generic<typename TSource>
static IObservable<TSource>^ Scan(
    IObservable<TSource>^ source, 
    Func<TSource, TSource, TSource>^ accumulator
static member Scan : 
        source:IObservable<'TSource> * 
        accumulator:Func<'TSource, 'TSource, 'TSource> -> IObservable<'TSource> 

Type Parameters

  • TSource


  • accumulator
    Type: System.Func<TSource, TSource, TSource>

Return Value

Type: System.IObservable<TSource>

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 Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Version Information

.NET for Windows Phone apps

Supported in: Windows Phone 8, Silverlight 8.1

.NET Framework Security

See Also


Observable Class

Scan Overload

Microsoft.Phone.Reactive Namespace