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CepWindowExtensionMethods.Avg<TPayload> Method (CepWindow<TPayload>, Expression<Func<TPayload, Nullable<UInt64>>>)

Computes the average over all events in a window. The value to average over is defined in the input expression parameter.

Namespace:  Microsoft.ComplexEventProcessing.Linq
Assembly:  Microsoft.ComplexEventProcessing (in Microsoft.ComplexEventProcessing.dll)

public static Nullable<double> Avg<TPayload>(
	this CepWindow<TPayload> window,
	Expression<Func<TPayload, Nullable<ulong>>> input
)

Type Parameters

TPayload

The payload type of window events.

Parameters

window
Type: Microsoft.ComplexEventProcessing.Linq.CepWindow<TPayload>
The window with the input events to which the average is applied to.
input
Type: System.Linq.Expressions.Expression<Func<TPayload, Nullable<UInt64>>>
The lambda expression which specifies the value that the average is computed over.

Return Value

Type: System.Nullable<Double>
The nullable value that contains the average over the events in the input window.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type CepWindow<TPayload>. 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 or https://msdn.microsoft.com/en-us/library/bb383977.
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