ISetWindowFieldsPartitionExtensionsSumTInput Method (ISetWindowFieldsPartitionTInput, FuncTInput, NullableSingle, SetWindowFieldsWindow) |
Returns the sum of numeric values. $sum ignores non-numeric values.
Namespace:
MongoDB.Driver.Linq
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.22.0+75246110ed1247226fcc7f8eb2c54ffab745693e
Syntax public static float? Sum<TInput>(
this ISetWindowFieldsPartition<TInput> partition,
Func<TInput, float?> selector,
SetWindowFieldsWindow window = null
)
<ExtensionAttribute>
Public Shared Function Sum(Of TInput) (
partition As ISetWindowFieldsPartition(Of TInput),
selector As Func(Of TInput, Single?),
Optional window As SetWindowFieldsWindow = Nothing
) As Single?
[<ExtensionAttribute>]
static member Sum :
partition : ISetWindowFieldsPartition<'TInput> *
selector : Func<'TInput, Nullable<float32>> *
?window : SetWindowFieldsWindow
(* Defaults:
let _window = defaultArg window null
*)
-> Nullable<float32>
Parameters
- partition
- Type: MongoDB.DriverISetWindowFieldsPartitionTInput
The partition. - selector
- Type: SystemFuncTInput, NullableSingle
The selector that selects a value from the input document. - window (Optional)
- Type: MongoDB.DriverSetWindowFieldsWindow
The window boundaries.
Type Parameters
- TInput
- The type of the input documents in the partition.
Return Value
Type:
NullableSingleThe sum of the values.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
ISetWindowFieldsPartitionTInput. 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).
See Also