Structural Design Patterns in Modern C++ - Introduction to the Flyweight Pattern

The video tutorial discusses the Flyweight design pattern, a structural pattern used for memory optimization in object-oriented design. It explains how the pattern reduces memory usage by sharing common states among objects, known as intrinsic states, while keeping unique states, or extrinsic states, separate. An example is provided to illustrate how the Flyweight pattern can be applied to reduce memory consumption by sharing common attributes among multiple instances.

What is the primary goal of the Flyweight pattern?

• To simplify the code structure

• To optimize memory usage by sharing common states

• To enhance the security of the application

• To increase the speed of object creation

Which type of state in the Flyweight pattern is shared among objects?

• Contextual state

• Intrinsic state

• Dynamic state

• Extrinsic state

What is the characteristic of extrinsic state in the Flyweight pattern?

• It is immutable and constant

• It is context-dependent and supplied as needed

• It is stored inside the flyweight object

• It is shared among all flyweight objects

In the provided example, which attribute is considered intrinsic?

• Attribute X

• Attribute Z

• Attribute Y

• Attribute W

How does the Flyweight pattern help in reducing memory usage?

• By sharing intrinsic state and managing extrinsic state separately

• By removing unnecessary objects

• By compressing object data

• By duplicating objects