Design Patterns

Explore various design patterns and their usage in software development

Introduction

Design patterns are standard solutions to common problems in software design. They provide proven, reusable templates for solving issues that frequently arise during software development.

Common Design Patterns

Creational Patterns

These patterns deal with object creation mechanisms. Examples include:

Structural Patterns

These patterns deal with object composition and typically help ensure that objects work well together. Examples include:

Behavioral Patterns

These patterns focus on communication between objects. Examples include:

Code Example: Singleton Pattern


class Singleton {
    private static instance: Singleton;

    private constructor() {}

    public static getInstance(): Singleton {
        if (!Singleton.instance) {
            Singleton.instance = new Singleton();
        }
        return Singleton.instance;
    }
}

// Usage
const singleton1 = Singleton.getInstance();
const singleton2 = Singleton.getInstance();

console.log(singleton1 === singleton2);  // Output: true

        

Conclusion

Design patterns are essential tools for any software engineer. They help in creating scalable, maintainable, and efficient systems. By understanding and implementing design patterns, developers can improve the quality of their code and their problem-solving skills.