Case Study 1: 1. Class EventHandler

question 21

Multiple Choice

Case Study 1:
1. class EventHandler:
2. def __init__(self) :
3. self.__queue = []
4. self.__eventKeeper = {}
5.
6. def addEvent(self, eventName) :
7. self.__queue.append(eventName)
8.
9. def registerCallback(self, event, func) :
10. self.__eventKeeper[event] = func
11.
12. def run(self) :
13. while(True) :
14. if len(self.__queue) > 0:
15. nextEvent = self.__queue.pop(0)
16. self.__eventKeeper[nextEvent]()
17. else:
18. print('queue is empty')
-Refer to the session in the accompanying Case Study 1. What is held in self.__queue?

• A) The list of events that need to be processed
• B) The dictionary that maps events to their callback functions
• C) The list of how many times the simulation should run
• D) The number of different types of callback functions

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Definitions:

States of Nature

The different outcomes or future conditions that might occur in a decision-making scenario, over which the decision maker has no control.

Profit/Value

The financial gain, often the difference between the selling price and the cost of goods sold or the worth that is generated from an activity or investment.

Modernize Baths

Initiatives or processes aimed at updating and enhancing the efficiency and features of bathroom facilities.

Annual Profit

The total revenue of a business minus total expenses over the course of a year, indicating the financial performance and health of the business.