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Qbservable::Aggregate<TSource, TAccumulate> Method (IQbservable<TSource>, TAccumulate, Expression<Func<TAccumulate, TSource, TAccumulate>>)

Applies an accumulator function over a queryable observable sequence.

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

generic<typename TSource, typename TAccumulate>
static IQbservable<TAccumulate>^ Aggregate(
	IQbservable<TSource>^ source, 
	TAccumulate seed, 
	Expression<Func<TAccumulate, TSource, TAccumulate>^>^ accumulator

Type Parameters


The type of source.


The type of accumulate.


Type: System.Reactive.Linq::IQbservable<TSource>
An observable sequence to aggregate over.
Type: TAccumulate
The initial accumulator value.
Type: System.Linq.Expressions::Expression<Func<TAccumulate, TSource, TAccumulate>>
An accumulator function to be invoked on each element.

Return Value

Type: System.Reactive.Linq::IQbservable<TAccumulate>
A queryable observable sequence containing a single element with the final accumulator value.

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 https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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