Creational Design Patterns in Modern C++ - Pros and Cons - highlights the pros and cons of the factory method

The video tutorial explains the factory method design pattern, highlighting its purpose of creating instances without tight coupling to specific classes. It covers implementation strategies, including parameterized methods, and discusses the benefits of loose coupling and encapsulation. The tutorial also addresses when to use factory methods, such as when a class needs instances of unknown types at runtime. It concludes with a brief mention of the abstract factory pattern.

What is the primary purpose of introducing a factory method in the creator clause?

• To eliminate the need for any product hierarchies

• To allow the creator to create instances without tight coupling

• To ensure the creator clause is always abstract

• To tightly couple the creator with product hierarchies

How does a parameterized factory method differ from a regular factory method?

• It requires creating a new class for each document type

• It uses arguments to determine which class instance to return

• It cannot be modified once implemented

• It is always abstract

What is one advantage of using the factory method pattern?

• It requires hardcoding class names

• It makes the construction process visible to clients

• It promotes tight coupling

• It allows for runtime instance creation

What is a potential disadvantage of using the factory method?

• It always returns a cached instance

• It may require adding a new clause for each new product

• It cannot be used with object pools

• It leads to tight coupling

When is it appropriate to use a factory method?

• When the creation process should be visible to clients

• When the clause needs to use instances of different classes without tight coupling

• When the clause wants to depend on specific classes

• When the clause knows exactly which instance it needs

What is a key benefit of encapsulating the creation process using a factory method?

• It makes the creation process more complex

• It requires more classes to be created

• It hides the construction details from the client

• It eliminates the need for any abstraction

What is a variation of the factory method that will be discussed in the future?

• A method that requires no parameters

• A method that always creates a new instance

• A method that returns an existing instance when needed

• A method that is always abstract