How can I implement template patterns in my code?

How can I implement template patterns in my code?

Template patterns are design patterns that define the skeleton of an algorithm in a method, deferring some steps to subclasses. You can implement them by creating an abstract class with a template method that calls abstract methods.

Can you give me a code example of a template pattern?

Sure! Here's a simple example in Python:

from abc import ABC, abstractmethod

class Template(ABC):
    def template_method(self):
        self.step_one()
        self.step_two()

    @abstractmethod
    def step_one(self):
        pass

    @abstractmethod
    def step_two(self):
        pass

class ConcreteClass(Template):
    def step_one(self):
        print('Step One: Implementation')

    def step_two(self):
        print('Step Two: Implementation')

# Usage
obj = ConcreteClass()
obj.template_method()

What are the benefits of using template patterns?

Template patterns promote code reuse and help in defining a clear structure for algorithms. They allow subclasses to implement specific behaviors while keeping the overall algorithm intact.

Are there any drawbacks to using template patterns?

Yes, one drawback is that they can lead to a rigid structure, making it harder to change the algorithm if needed. Additionally, overusing them can complicate the codebase.