Behavioral Design Patterns in C++ - TextPad - V

The video addresses the issue of tight coupling between the menu and application classes, making it difficult to reuse the menu with other classes. The instructor explains the concept of function pointers and the challenges of using them with member functions. To resolve this, the menu class is modified to allow runtime configuration using a map and tuples to store options and callbacks. The video concludes with implementing a callback mechanism and testing the menu's functionality, ensuring it can handle user input and execute the appropriate functions.

What is the main issue with the current implementation of the menu and application classes?

• They are too loosely coupled.

• They are not implemented in the same file.

• They are tightly coupled, making reuse difficult.

• They do not have enough functions.

Why is it challenging to use simple function pointers with member functions?

• Member functions cannot be accessed directly.

• Member functions are private by default.

• Member functions require object context.

• Function pointers are not supported in C.

What data structure is used to store menu options and their callbacks?

• Map

• List

• Array

• Stack

What is the purpose of creating an alias for the callback?

• To reduce memory usage.

• To simplify the function signature.

• To make the code more readable.

• To avoid using pointers.

How is the display function of the application invoked in the new menu class?

• Using a global variable.

• Through a callback.

• Via a static method.

• Directly by name.

What happens if the user selects an option with an index greater than the options table?

• The program crashes.

• The application exits.

• A message is printed.

• The first option is selected.

What is the return value when the user chooses to exit the application?

• False

• True

• Zero

• Null