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https://github.com/zoranpandovski/design-patterns

:briefcase: Design patterns written in different programming languages :triangular_ruler:
https://github.com/zoranpandovski/design-patterns

cpp csharp design-pattern design-patterns gang-of-four good-practices hacktoberfest hacktoberfest2020 java javascript php python

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:briefcase: Design patterns written in different programming languages :triangular_ruler:

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README 

        


 	Design patterns

 	


 	


 



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# Design patterns  [![Tweet](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=Design%20Patterns&url=https://github.com/ZoranPandovski/design-patterns&via=design-patterns&hashtags=design,design-patterns,python,java,c,cpp,php,javascript)



In software engineering, a software design pattern is a general reusable solution to a commonly occurring problem within a given context in software design. It is not a finished design that can be transformed directly into source or machine code. It is a description or template used to know how to solve a problem that can be used in many different situations. Design patterns are formalized best practices that a programmer can use to solve common problems while designing an application or system.

Design patterns may be viewed as a structured approach to computer programming intermediate between the levels of a programming paradigm and a concrete algorithm.



## List of implementations



* [Behavioral](Behavioral)

  * [Callback](Behavioral/Callback)

  * [Chain Of Responsibility](Behavioral/ChainOfResponsability)

  * [Command](Behavioral/Command)

  * [Delegation](Behavioral/Delegation)

  * [Iterator](Behavioral/Iterator)

  * [Null Object](Behavioral/NullObject)

  * [Observer](Behavioral/Observer)

  * [State](Behavioral/State)

  * [Strategy](Behavioral/Strategy)

  * [Template Method](Behavioral/TemplateMethod)

  * [Visitor](Behavioral/Visitor)

  * [Interpreter](Behavioral/Interpreter)

  * [Mediator](Behavioral/Mediator)

* [Concurrency](Concurrency)

  * [Active Object](Concurrency/Active%20Object)

  * [Balking Pattern](Concurrency/Balking%20Pattern)

  * [Concurrent Server](Concurrency/Concurrent%20Server)

  * [Fan Out](Concurrency/Fan%20Out)

  * [Guarded Suspension](Concurrency/Guarded%20Suspension)

  * [Mutext](Concurrency/Mutex)

  * [Semaphores](Concurrency/Semaphores)

  * [Observer](Concurrency/Observer)

  * [Thread Pool](Concurrency/ThreadPool)

* [Creational](Creational)

  * [Abstract Factory](Creational/Abstract%20Factory)

  * [Builder](Creational/Builder)

  * [Dependency Injection](Creational/Dependency%20Injection)

  * [Factory](Creational/Factory)

  * [Lazy Initialization](Creational/LazyInitialization)

  * [Method Chaining](Creational/Method%20Chaining)

  * [Prototype](Creational/Prototype)

  * [Singleton](Creational/Singleton)

  * [Value Object](Creational/Value%20Object)

* [Structural](Structural)

  * [Adapter](Structural/Adapter)

  * [Bridge](Structural/Bridge)

  * [Builder](Structural/Builder)

  * [Composite](Structural/Composite)

  * [Decorator](Structural/Decorator)

  * [Filter](Structural/Filter)

  * [Flyweight](Structural/Flyweight)

  * [Facade](Structural/Facade)

  * [Repository](Structural/Repository)

  * [PrivateClass](Structural/PrivateClass)

  * [Proxy](Structural/Proxy)

  * [TransactionalStack](Structural/TransactionalStack)



## Contribution

 * Contributions are always welcome. Language doesn't matter. Just make sure you're implementing design pattern.

 * PRs are welcome. To begin developing, follow the structure:



   > category/design pattern name/language-name/file_name.extension



   e.g



   > Creational/Abstract factory/python/abstract_factory.py

 * Don't forget to add README with explanation how pattern works, when to use and common usage of the pattern.

 * Adding image with UML diagram for design pattern would be very helpful.



## Resources



 Curated list of resources dealing with design patterns.



 * Books

   * [Head First Design Patterns 2nd Edition](https://www.amazon.com/Head-First-Design-Patterns-Object-Oriented/dp/149207800X) [[Python](https://github.com/rebuild-123/Python-Head-First-Design-Patterns)] [[Java](https://github.com/bethrobson/Head-First-Design-Patterns)]

   * [Elements of Reusable Object-Oriented Software](https://www.amazon.com/gp/product/0201633612/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0201633612&linkCode=as2&tag=anjabl-20)

   * [Design Patterns Explained: A New Perspective on Object Oriented Design](https://www.amazon.com/dp/0321247140/?tag=myga0ba-20)

   * [Patterns of Enterprise Application Architecture](https://www.amazon.com/dp/0321127420/?tag=myga0ba-20)

 * Free e-books

   * [Design Pattern in C++](http://www.uml.org.cn/c++/pdf/DesignPatterns.pdf)

   * [Design Pattern in Javascript](http://sd.blackball.lv/library/Mastering_JavaScript_Design_Patterns_(2014).pdf)

 * Sites

   * [Design patterns](http://www.oodesign.com/)

   * [Geeks for geeks design patterns](http://www.geeksforgeeks.org/software-design-patterns/)

   * [Source making Design patterns](https://sourcemaking.com/design_patterns)

   * [Java Desgin Pattens Example tutorial](https://www.journaldev.com/1827/java-design-patterns-example-tutorial)

   * [Learn about Design Patterns](https://www.scaler.com/topics/design-patterns/)

   * [Design Patterns - refactoring.guru](https://refactoring.guru/design-patterns)

 * Online classes (Free)

   * [Design Patterns - Coursera](https://www.coursera.org/courses?query=design%20patterns)

   * [Hackr.io list ](https://hackr.io/tutorials/learn-software-design-patterns)



 ## License



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To the extent possible under law, [Zoran Pandovski](https://github.com/ZoranPandovski/) has waived all copyright and related or neighboring rights to this work.