Observable.Sum Method (IObservable<Int32>)

Computes the sum of a sequence of Int32 values.

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

public static IObservable<int> Sum(
	this IObservable<int> source


Type: System.IObservable<Int32>
A sequence of Int32 values to calculate the sum of.

Return Value

Type: System.IObservable<Int32>
The sum of a sequence of Int32 values.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<Int32>. 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.aspx or https://msdn.microsoft.com/en-us/library/bb383977.aspx.