ArrayMath.SumIf(Double[], Func<Double, Boolean>) Method

Computes the sum of the elements in an array that satisfy the specified predicate.

Definition

Namespace: Extreme.Mathematics
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23

public static double SumIf(
	this double[] array,
	Func<double, bool> predicate
)

Visual Basic

<ExtensionAttribute>
Public Shared Function SumIf ( 
	array As Double(),
	predicate As Func(Of Double, Boolean)
) As Double

C++/CLI

public:
[ExtensionAttribute]
static double SumIf(
	array<double>^ array, 
	Func<double, bool>^ predicate
)

[<ExtensionAttribute>]
static member SumIf : 
        array : float[] * 
        predicate : Func<float, bool> -> float

array Double[]: A Double array.
predicate Func<Double, Boolean>: A delegate that represents a function of one variable that returns whether a value should be included in the sum.

Double
The sum of the specified elements in array.

In Visual Basic and C#, you can call this method as an instance method on any object of type Double[]. 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).