Behavioral Design Patterns in C++ - Spreadsheet Application - IV

The video tutorial discusses the implementation of the strategy design pattern to address issues with the current export function in a data model class. The strategy pattern allows for different algorithm variants to be encapsulated and made interchangeable, solving problems related to the Open Closed principle. The tutorial demonstrates creating a CSV format class to handle data export and highlights the importance of programming to an interface to avoid tight coupling, adhering to the Dependency Inversion principle.

What is the main goal of the strategy design pattern?

• To eliminate the need for classes

• To increase the complexity of the code

• To provide a single algorithm for all scenarios

• To encapsulate algorithms and make them interchangeable

Why does the current export function implementation violate the Open Closed principle?

• It is not documented

• It requires modification for adding new formats

• It is too simple

• It uses too many resources

What is the purpose of passing a pointer to the data model in the CSV format class?

• To increase the speed of data processing

• To reduce memory usage

• To simplify the code structure

• To avoid passing large data sets directly

What problem arises from the data model being tightly coupled with the CSV format?

• It makes the code more efficient

• It simplifies the addition of new formats

• It requires changes to the data model for new formats

• It enhances the readability of the code

What principle is violated when the data model is directly using the concrete instance of the CSV format class?

• Liskov Substitution Principle

• Single Responsibility Principle

• Open Closed Principle

• Dependency Inversion Principle

What is the next step suggested to solve the tight coupling issue?

• Remove the CSV format class

• Create a base class for the CSV format

• Add more conditional statements

• Create a new data model class

What does the Dependency Inversion principle advocate?

• Avoiding the use of interfaces

• Using only concrete classes

• Programming to an interface, not to an implementation

• Programming to specific implementations