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Delta

Class

Tests whether two numeric values are equal and returns 1 if they match or 0 otherwise, useful for filtering and counting matching pairs through summation of multiple DELTA results.

Definition

Namespace:Telerik.Documents.Spreadsheet.Expressions.Functions

Assembly:Telerik.Windows.Documents.Spreadsheet.dll

Syntax:

public class Delta : NumbersInFunction

Inheritance: objectFunctionBaseFunctionWithArgumentsFunctionWithSameTypeArguments<double>NumbersInFunctionDelta...

Inherited Members FunctionWithSameTypeArguments<double>.EvaluateOverride(FunctionEvaluationContext<object>)FunctionWithArguments.EvaluateOverride(FunctionEvaluationContext<RadExpression>)FunctionWithArguments.EvaluateLiftedElement(FunctionEvaluationContext<RadExpression>, RadExpression[], int, int)FunctionBase.IsSpillingArgument(int, RadExpression)FunctionBase.Evaluate(FunctionEvaluationContext<RadExpression>)FunctionBase.IsArgumentNumberValid(int)FunctionBase.LiftsOverArrays...

Constructors

Delta()

Initializes a new DELTA function instance for testing numeric equality.

public Delta()

Fields

FunctionName

string

The name of the function.

public static readonly string FunctionName

Properties

ArgumentConversionRules

Rules governing how argument values are interpreted and converted during function evaluation.

public override ArgumentConversionRules ArgumentConversionRules { get; }

Property Value:

The argument conversion rules as ArgumentConversionRules.

Overrides: NumbersInFunction.ArgumentConversionRules

FunctionInfo

Metadata describing the function signature, category, and argument requirements.

public override FunctionInfo FunctionInfo { get; }

Property Value:

The function info as FunctionInfo.

Overrides: FunctionBase.FunctionInfo

Name

string

The function name "DELTA" used in formulas.

public override string Name { get; }

Property Value:

The name as String.

Overrides: FunctionBase.Name

Methods

EvaluateOverride(FunctionEvaluationContext<double>)

Evaluates the equality comparison and returns 1 if the values are equal or 0 if they differ.

protected override RadExpression EvaluateOverride(FunctionEvaluationContext<double> context)

Parameters:contextFunctionEvaluationContext<double>

The context.

Returns:

RadExpression

Functions result as RadExpression.

Overrides: FunctionWithSameTypeArguments<double>.EvaluateOverride(FunctionEvaluationContext<double>)