How many patterns does the web have?

Strategic Design Patterns

Strategic Design Patterns, are like advanced versions of ifelse statements. Basically, you can create interfaces in it for methods in the base class. Then, use this interface to find the correct implementation of that method from the derived class.

The behavior of a class or its algorithm can be changed at runtime. This type of design pattern is a behavioral pattern.

In the strategy pattern, we create objects that represent various strategies and a context object whose behavior changes as the strategy object changes. The strategy object changes the execution algorithm of the context object.

Observer Design Pattern

If you have ever used the MVC pattern, then you have already used the observer design pattern. The Observer pattern is like the View part of MVC. You have a topic that contains all the data and its state. You will then have the same observers as the user who will pull data from the topic as it is updated.

Sending user notifications, updating, filtering and handling subscribers can all be done using the observer pattern.

Decorator Design Pattern

Allows adding new functionality to an existing object without changing its structure. This type of design pattern is a structural pattern that acts as a wrapper around an existing class.

This pattern creates a decorated class that wraps the original class and provides additional functionality while maintaining the integrity of the class method signature.

We demonstrate the use of the decorator pattern with the following example. In it, we will decorate a shape with different colors without changing the shape class.

Dynamically adding some extra responsibilities to an object. The decorator pattern is more flexible compared to generating subclasses as far as adding functionality is concerned.

A DesignPattern is a set of routines for solving a particular problem, summarizing the experience of previous generations in code development. They are not syntactic rules, but rather a set of solutions to improve code reusability, maintainability, readability, robustness, and security.

If you haven't heard of design patterns, or if you rarely use strategy patterns in your coding, I hope you'll pay more attention to them from now on, as good design patterns can definitely improve the quality of your code.