Behavioral Design Patterns in C++ - Transition Table - II

The video tutorial explains the implementation of a transition table in the LAMP class, demonstrating how to manage state transitions without manually creating instances. It covers the process of adding a new state, specifically the yellow state, and the necessary modifications to the transition table. The tutorial also compares the state pattern and transition table approaches, highlighting their differences in terms of class management, transition logic, and complexity. It concludes with guidance on when to use each method based on the number of states involved.

What is the primary role of the transition table in the LAMP class?

• To print messages

• To clear the screen

• To manage state transitions

• To manually create instances

How does the transition table handle the 'switch on' event when the lamp is already on?

• It changes the state to off

• It prints 'already on'

• It clears the screen

• It does nothing

What change is required in the transition table when adding the yellow state?

• Add a new event for yellow state

• Remove the yellow state class

• Modify the transition logic for on state

• Change the default state

What happens when the on button is pressed while the lamp is in the yellow state?

• The lamp changes to off state

• The lamp stays yellow

• The lamp turns off

• The lamp changes to on state

In the context of the state pattern, what is the focus of the transition table?

• State-specific behavior

• Centralized transition logic

• Decentralized transition logic

• Class management

When should you prefer using the transition table over the state pattern?

• When there are many states

• When you need decentralized logic

• When you want more classes

• When there are fewer states

What is a disadvantage of using the transition table?

• It can become complex with many transitions

• It focuses on state-specific behavior

• It decentralizes transition logic

• It requires more classes