ISetWindowFieldsPartitionExtensionsSumTInput Method (ISetWindowFieldsPartitionTInput, FuncTInput, NullableInt64, SetWindowFieldsWindow)

public static long? Sum<TInput>(
	this ISetWindowFieldsPartition<TInput> partition,
	Func<TInput, long?> selector,
	SetWindowFieldsWindow window = null
)

<ExtensionAttribute>
Public Shared Function Sum(Of TInput) ( 
	partition As ISetWindowFieldsPartition(Of TInput),
	selector As Func(Of TInput, Long?),
	Optional window As SetWindowFieldsWindow = Nothing
) As Long?

[<ExtensionAttribute>]
static member Sum : 
        partition : ISetWindowFieldsPartition<'TInput> * 
        selector : Func<'TInput, Nullable<int64>> * 
        ?window : SetWindowFieldsWindow 
(* Defaults:
        let _window = defaultArg window null
*)
-> Nullable<int64>