Creational Design Patterns in Modern C++ - Varying State

The video tutorial explains how to optimize code by reducing the number of clauses through varying the states of existing objects. It demonstrates modifying a project by consolidating class files for buses and cars, and adding a color attribute to the vehicle class. The tutorial also covers updating speed logic based on car color and highlights the benefits of using the prototype design pattern, which allows for creating different instances with multiple state combinations without needing new classes.

What is the main benefit of modifying existing objects instead of creating new ones?

• It requires more memory.

• It makes the code run slower.

• It reduces the number of clauses needed.

• It increases the complexity of the code.

How can different types of vehicles be represented using a single class?

• By adding more wheels to the vehicle.

• By altering the vehicle's speed.

• By modifying the vehicle's color attribute.

• By changing the vehicle's size.

What special behavior is associated with the red car in the video?

• It can transform into a bus.

• It can change its color.

• It can increase its speed temporarily.

• It can fly for a short period.

What is a key advantage of using the prototype design pattern?

• It allows for the creation of multiple classes for each object.

• It simplifies the process of creating new classes.

• It requires less coding effort.

• It enables different instances to have various states from a single class.

Why is it unnecessary to create new classes when using the prototype pattern?

• Because it is not allowed in object-oriented programming.

• Because it is too complex to create new classes.

• Because it is more expensive to create new classes.

• Because new objects can be created with different states.