Creational Design Patterns in Modern C++ - Parameterized Factory Method

The video tutorial explains the factory pattern, highlighting its limitations when adding new product types. It introduces the parameterized factory method as a solution, allowing the creation of multiple document types without needing corresponding application classes. The tutorial demonstrates implementing a document factory using a parameterized approach, refactoring code, and handling errors. It also discusses using static methods in the factory pattern to improve efficiency and reduce unnecessary instance creation. The tutorial concludes with a discussion on extending the factory method to support more document types in the future.

What is a key disadvantage of the traditional factory method pattern?

• It is too complex to implement.

• It requires a new application class for each product type.

• It cannot create instances of classes.

• It does not support any document types.

Why is a parameterized factory preferred over the traditional factory method in certain scenarios?

• It is easier to debug.

• It is faster than the traditional factory method.

• It requires less memory.

• It allows for the creation of multiple document types without additional application classes.

What is the role of the document factory class in the parameterized factory pattern?

• To handle errors in document processing.

• To create instances of different document classes based on a parameter.

• To store document data.

• To manage user inputs.

What type of parameter is used in the document factory method to determine the document type?

• String

• Boolean

• Float

• Character

What is a benefit of making the factory method static?

• It limits the number of document types.

• It requires more memory.

• It increases the complexity of the code.

• It avoids creating unnecessary instances of the factory.

How can the parameterized factory be extended to support new document types?

• By using a different programming language.

• By removing existing document types.

• By rewriting the entire factory class.

• By adding new conditional statements in the create method.

What is a potential issue when including header files in the document factory?

• Performance degradation

• Syntax error

• Memory leak

• Circular dependency