text: public ValueEval Evaluate(ValueEval[] args, OperationEvaluationContext ec){if (args.Length != 1){return ErrorEval.VALUE_INVALID;}int val;try{val = EvaluateArgParity(args[0], ec.RowIndex, ec.ColumnIndex);}catch (EvaluationException e){return e.GetErrorEval();}return BoolEval.ValueOf(val == _desiredParity);}