Decorators between Class-based & Prototype-based programming languages

Decorators between Class-based & Prototype-based programming languages

Implementing the decorator pattern will differ between Class-based and Prototype-based programming languages because of the difference in their nature. I will talk in this article about implementing the decorator pattern in both Javascript and C# programming languages. And consider some real-life scenarios to use them.

The difference between OOP and Prototype languages centralize around the reuse principle (Known as inheritance), its performed via a process of reusing objects (Known as prototype inheritance) in Prototype-based programming languages and via a process of reusing the classes of objects or blueprints of objects (Known as class inheritance).

The decorator is a design pattern that allows behavior to be added to an object in a dynamic way without having to change the implementation of that object. The decorator is considered as Structural design pattern. And an important note is that the decorator follows the Open-Closed Principle.

Implementing the decorator pattern will differ between Class-based and Prototype-based programming languages because of the difference in their nature. I will talk in this article about implementing the decorator pattern in both Javascript and C## programming languages. And consider some real-life scenarios to use them.


Decorator in C#

Decorators in C## can be applied using two methods:

1- Inheriting from a target class and have a setter method to set that target class instance inside the decorator or bypassing the target class as a dependency to the decorator class through the constructor. Then in the overridden functions, we call the target class function with additional decoration. The next UML explains that:

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javascript decorators typescript c-sharp-programming decorator-pattern

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