Complexity with Many Steps:?

• If the template method involves a large number of steps, or if there are many

subclasses with different variations of steps, the code can become harder to

manage and maintain.

Conclusion:

The Template Method Pattern is a powerful way to define the structure of an algorithm

while allowing subclasses to customize specific steps. It's ideal when you want to reuse a

Follow:

common workflow while providing flexibility to modify particular steps. It is frequently used in

frameworks and libraries, where the overall process must remain consistent, but certain

aspects can be customized or extended. This pattern ensures that the general algorithm

remains the same while giving subclasses the freedom to tailor specific steps to their needs.

Visitor Pattern: Adding New Operations Without Modifying Object

Structures

Definition:

The Visitor Pattern separates an algorithm from the object structure on which it operates. It

allows you to add new operations to existing object structures without modifying the

structures themselves. Instead of embedding operations directly into the objects, you define

a visitor that knows how to operate on each type of object in the structure.

Use Case:

A typical use case for the Visitor Pattern is calculating taxes or discounts for different

product types in a shopping cart. Each product type (e.g., books, fruits, electronics) might

require different calculations, and the Visitor Pattern allows you to easily add new types of

operations (e.g., tax calculation, discount application) without altering the objects in the

shopping cart.

Code Breakdown: