public final class Delta extends Fixed2ArgFunction implements FreeRefFunction
DELTA (number1,number2 )
Tests whether two values are equal. Returns 1 if number1 = number2; returns 0 otherwise. Use this function to filter a set of values. For example, by summing several DELTA functions you calculate the count of equal pairs. This function is also known as the Kronecker Delta function.
|Constructor and Description|
|Modifier and Type||Method and Description|
public static final FreeRefFunction instance
public ValueEval evaluate(ValueEval args, OperationEvaluationContext ec)
args- the pre-evaluated arguments for this function. args is never
null, nor are any of its elements.
ec- primarily used to identify the source cell containing the formula being evaluated. may also be used to dynamically create reference evals.
null. Possibly an instance of ErrorEval in the case of a specified Excel error (Exceptions are never thrown to represent Excel errors).
Copyright 2017 The Apache Software Foundation or its licensors, as applicable.