Programming Concepts Intermediate

What is Design Pattern?

A reusable solution template for commonly occurring problems in software design.

Design patterns are proven solutions to recurring design problems. The Gang of Four book categorizes them into creational (Singleton, Factory, Builder), structural (Adapter, Decorator, Proxy), and behavioral (Observer, Strategy, Command) patterns.

Patterns provide a common vocabulary for developers and help create flexible, maintainable code. However, overusing patterns adds unnecessary complexity. Apply patterns when they solve a clear problem, not preventively.

Learn More About This Topic

Python Design Patterns: A Comprehensive Guide

Directly covers this topic

TypeScript Design Patterns

Directly covers this topic

Mastering Python Object-Oriented Programming

Closely related

Related Terms

Object-Oriented Programming (OOP)

A programming paradigm that organizes software design around objects containing data and behavior.

Event-Driven Architecture

A software design pattern where components communicate by producing and consuming events rather than direct method calls.

A mathematical notation that describes the worst-case performance of an algorithm as input size grows.

An efficient search algorithm that finds a target value in a sorted array by repeatedly dividing the search interval in half.

A function that captures and retains access to variables from its enclosing scope, even after that scope has finished executing.

The implied cost of additional rework caused by choosing a quick solution now instead of a better approach that would take longer.

View All Programming Concepts Terms →