Qbservable.Sum Method (IQbservable<Double>)
Computes the sum of a sequence of Double values.
Namespace: System.Reactive.Linq
Assembly: System.Reactive.Providers (in System.Reactive.Providers.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function Sum ( _
source As IQbservable(Of Double) _
) As IQbservable(Of Double)
'Usage
Dim source As IQbservable(Of Double)
Dim returnValue As IQbservable(Of Double)
returnValue = source.Sum()
public static IQbservable<double> Sum(
this IQbservable<double> source
)
[ExtensionAttribute]
public:
static IQbservable<double>^ Sum(
IQbservable<double>^ source
)
static member Sum :
source:IQbservable<float> -> IQbservable<float>
public static function Sum(
source : IQbservable<double>
) : IQbservable<double>
Parameters
- source
Type: System.Reactive.Linq.IQbservable<Double>
A sequence of Double values to calculate the sum of.
Return Value
Type: System.Reactive.Linq.IQbservable<Double>
The sum of a sequence of Double values.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<Double>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .