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

The lecture discusses the limitations of the current export function, which violates the open-closed principle due to its reliance on conditional statements. It explores the idea of overriding the export function by creating a subclass, but faces challenges with private member access and runtime format selection. The lecture highlights the issues of tight coupling and principle violations, such as Liskov substitution and single responsibility, concluding with a promise to address these in the next lecture.

What principle is violated when adding more conditional statements to support new file formats?

• Single Responsibility Principle

• Open-Closed Principle

• Liskov Substitution Principle

• Interface Segregation Principle

Why can't the export function be overridden in the initial setup?

• It is a final function

• It is a static function

• It is a private function

• It is not a virtual function

What solution is proposed to access private member variables in a subclass?

• Provide a function returning a constant reference

• Make the member variable public

• Use reflection

• Use a friend class

What is a major limitation of creating instances of specific data models at runtime?

• It restricts the export format choice

• It increases memory usage

• It complicates the code structure

• It violates encapsulation

What principle is violated when HTML data model cannot act as a substitute for data model class?

• Dependency Inversion Principle

• Liskov Substitution Principle

• Open-Closed Principle

• Single Responsibility Principle

What issue arises if HTML data model inherits from multiple classes?

• It may violate the single responsibility principle

• It may increase execution time

• It may cause memory leaks

• It may lead to circular dependencies

What is the main reason the inheritance approach does not work for choosing export formats?

• It does not allow runtime flexibility

• It is too complex to implement

• It is not compatible with all file formats

• It requires too much memory