{"id":26288612,"url":"https://github.com/mangad/design-patterns-case-study","last_synced_at":"2026-05-04T20:39:01.242Z","repository":{"id":264687925,"uuid":"894094213","full_name":"MangaD/Design-Patterns-Case-Study","owner":"MangaD","description":"My personal study on Design Patterns.","archived":false,"fork":false,"pushed_at":"2025-09-08T14:57:20.000Z","size":10735,"stargazers_count":0,"open_issues_count":1,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-09-08T15:37:25.092Z","etag":null,"topics":["cpp","design-patterns","java","python","sphinx"],"latest_commit_sha":null,"homepage":"https://mangad.github.io/Design-Patterns-Case-Study/","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/MangaD.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2024-11-25T18:35:42.000Z","updated_at":"2025-09-08T14:51:47.000Z","dependencies_parsed_at":"2024-12-18T22:26:40.352Z","dependency_job_id":"9ccbbd31-bfa4-4e1d-920f-5e0ef1d02031","html_url":"https://github.com/MangaD/Design-Patterns-Case-Study","commit_stats":null,"previous_names":["mangad/design-patterns-case-study"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/MangaD/Design-Patterns-Case-Study","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MangaD%2FDesign-Patterns-Case-Study","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MangaD%2FDesign-Patterns-Case-Study/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MangaD%2FDesign-Patterns-Case-Study/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MangaD%2FDesign-Patterns-Case-Study/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/MangaD","download_url":"https://codeload.github.com/MangaD/Design-Patterns-Case-Study/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MangaD%2FDesign-Patterns-Case-Study/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":32624680,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-04T10:08:07.713Z","status":"ssl_error","status_checked_at":"2026-05-04T10:08:02.005Z","response_time":58,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["cpp","design-patterns","java","python","sphinx"],"created_at":"2025-03-14T22:14:08.189Z","updated_at":"2026-05-04T20:39:01.235Z","avatar_url":"https://github.com/MangaD.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Design Patterns Case Study\n\n[![CI](https://github.com/MangaD/Design-Patterns-Case-Study/actions/workflows/ci.yml/badge.svg)](https://github.com/MangaD/Design-Patterns-Case-Study/actions/workflows/ci.yml) [![pipeline status](https://gitlab.com/MangaD/design-patterns-case-study/badges/main/pipeline.svg)](https://gitlab.com/MangaD/design-patterns-case-study/-/commits/main) [![Documentation Status](https://readthedocs.org/projects/design-patterns-case-study/badge/?version=latest)](https://design-patterns-case-study.readthedocs.io/en/latest/?badge=latest)\n\n\nThis repository is a comprehensive exploration of **Object-Oriented Design Patterns**, implemented in **C++**, **Java**, and **Python**. It is designed as a hands-on learning resource for understanding, implementing, and applying design patterns in real-world software development.\n\n*Disclaimer: This project was built collaboratively with AI, step by step. Its primary purpose is to serve as an educational tool for studying and understanding design patterns.*\n\n---\n\n## What Are Design Patterns?\n\nDesign patterns are proven solutions to common problems in software design. They encapsulate best practices, providing a standardized and reusable approach to solving specific challenges. Design patterns fall into three main categories:\n\n1. **Creational Patterns**: Focus on object creation mechanisms, aiming to provide flexibility and reuse.\n2. **Structural Patterns**: Deal with object composition and relationships, ensuring that the system is easier to understand and maintain.\n3. **Behavioral Patterns**: Concerned with communication between objects and responsibility delegation.\n\n---\n\n## Why Study Design Patterns?\n\nStudying design patterns offers several benefits:\n- **Improved Design Skills**: Helps in identifying and solving recurring software problems.\n- **Code Reusability**: Promotes writing reusable and maintainable code.\n- **Team Collaboration**: Provides a shared vocabulary for discussing solutions.\n- **Scalability and Flexibility**: Encourages designing systems that can adapt to change.\n\nUnderstanding design patterns is essential for writing robust, maintainable, and efficient code. They are a cornerstone of software engineering principles such as SOLID and DRY (Don't Repeat Yourself).\n\n---\n\n## Patterns Included in This Case Study\n\n### **Creational Patterns**\n- **Singleton**: Ensures a class has only one instance.\n- **Factory Method**: Delegates object creation to subclasses.\n- **Abstract Factory**: Creates families of related objects without specifying their concrete classes.\n- **Builder**: Constructs complex objects step by step.\n- **Prototype**: Creates new objects by copying existing ones.\n- **Object Pool**: Manages a pool of reusable objects, reducing the overhead of creating and destroying objects frequently.\n\n### **Structural Patterns**\n- **Adapter**: Bridges incompatible interfaces.\n- **Bridge**: Separates an abstraction from its implementation.\n- **Composite**: Composes objects into tree structures.\n- **Decorator**: Dynamically adds behavior to objects.\n- **Facade**: Provides a simplified interface to a subsystem.\n- **Flyweight**: Minimizes memory usage by sharing data.\n- **Proxy**: Controls access to an object.\n\n### **Behavioral Patterns**\n- **Chain of Responsibility**: Passes requests along a chain of handlers.\n- **Command**: Encapsulates requests as objects.\n- **Interpreter**: Defines a grammatical representation for a language and provides an interpreter to deal with this grammar.\n- **Iterator**: Provides sequential access to collections.\n- **Mediator**: Centralizes communication between objects.\n- **Memento**: Captures and restores an object's internal state.\n- **Observer**: Establishes a dependency between objects for event notification.\n- **State**: Allows an object to alter its behavior when its state changes.\n- **Strategy**: Enables selecting algorithms at runtime.\n- **Template Method**: Defines a skeleton of an algorithm.\n- **Visitor**: Allows adding operations to objects without changing their structure.\n\n---\n\n## Project Structure\n\n```\nDesignPatternsCaseStudy/\n├── README.md               # Overview of the repository\n├── .github/workflows/      # GitHub Actions CI/CD configuration\n├── .gitlab-ci.yml          # GitLab CI/CD configuration\n├── docs/                   # Generated documentation for hosting (e.g., GitHub Pages)\n├── Creational/             # Creational design patterns\n│   ├── Singleton/\n│   ├── FactoryMethod/\n│   ├── AbstractFactory/\n│   └── Builder/\n├── Structural/             # Structural design patterns\n│   ├── Adapter/\n│   ├── Bridge/\n│   ├── Composite/\n│   └── Decorator/\n├── Behavioral/             # Behavioral design patterns\n│   ├── ChainOfResponsibility/\n│   ├── Command/\n|   ├── Interpreter/\n│   ├── Iterator/\n│   └── Mediator/\n```\n\n---\n\n## Tools and Technologies\n\n### **C++**\n- **Build System**: CMake\n- **Unit Testing**: GoogleTest\n- **Documentation**: Doxygen\n\n### **Java**\n- **Build System**: Gradle\n- **Unit Testing**: JUnit\n- **Documentation**: JavaDocs\n\n### **Python**\n- **Unit Testing**: unittest, pytest\n- **Documentation**: Sphinx\n\n---\n\n## How to Use This Repository\n\n1. **Clone the Repository**:\n   ```bash\n   git clone https://github.com/MangaD/Design-Patterns-Case-Study.git\n   # or\n   git clone https://gitlab.com/MangaD/design-patterns-case-study.git\n\n   cd DesignPatternsCaseStudy\n   ```\n\n2. **Build and Test**:\n   - **C++**: Use CMake for building and running tests.\n   - **Java**: Use Gradle for building and testing.\n   - **Python**: Run tests using `unittest` or `pytest`.\n\n   Check out the CI/CD files for commands.\n\n3. **Explore the Patterns**:\n   - Each pattern has a dedicated folder containing:\n     - **Source Code**: Implementations in C++, Java, and Python.\n     - **Unit Tests**: Tests for validating the implementation.\n     - **Documentation**: Detailed explanation and UML diagrams.\n\n---\n\n## Continuous Integration\n\n- **GitHub Actions**: Automates builds and tests across all implementations.\n- **GitLab CI/CD**: Equivalent pipelines for testing and deploying documentation.\n\n---\n\n## Resources and References\n\n- [Design Patterns: Elements of Reusable Object-Oriented Software](https://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)\n- [Head First Design Patterns: Building Extensible and Maintainable Object-Oriented Software 2nd Edition](https://www.amazon.com/Head-First-Design-Patterns-Object-Oriented/dp/149207800X)\n- [Refactoring.Guru - Design Patterns](https://refactoring.guru/design-patterns)\n\n---\n\n## License\n\nThis project is licensed under the MIT License. Contributions are welcome. Feel free to submit pull requests to improve implementations, add patterns, or enhance documentation.","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmangad%2Fdesign-patterns-case-study","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmangad%2Fdesign-patterns-case-study","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmangad%2Fdesign-patterns-case-study/lists"}