public AddCommand(OperationEvaluatorService evaluator) { _evaluator = evaluator; }
public ShiftLeftCommand(OperationEvaluatorService evaluator) { _evaluator = evaluator; }
public DivideCommand(OperationEvaluatorService evaluator) { _evaluator = evaluator; }
public SubtractCommand(OperationEvaluatorService evaluator) { _evaluator = evaluator; }
public MultiplyCommand(OperationEvaluatorService evaluator) { _evaluator = evaluator; }