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

March 22, 2012

Applies an accumulator function over an observable sequence and returns each intermediate result.

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

public static IObservable<TSource> Scan<TSource>(
	this IObservable<TSource> source,
	Func<TSource, TSource, TSource> accumulator
)

Type Parameters

TSource

Parameters

source
Type: System.IObservable<TSource>
accumulator
Type: System.Func<TSource, TSource, TSource>

Return Value

Type: System.IObservable<TSource>
Returns IObservable<T>.

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.

Windows Phone OS

Supported in: 7.1, 7.0

Windows Phone

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