https://github.com/aramzham/head_first_design_patterns

Design patterns examples from Head First Design Patterns book.
https://github.com/aramzham/head_first_design_patterns

design-patterns first head headfirstdesignpatterns

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Design patterns examples from Head First Design Patterns book.

• Host: GitHub
• URL: https://github.com/aramzham/head_first_design_patterns
• Owner: aramzham
• Created: 2019-12-14T12:34:34.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2022-06-28T21:45:13.000Z (over 2 years ago)
• Last Synced: 2023-03-05T19:38:03.708Z (almost 2 years ago)
• Topics: design-patterns, first, head, headfirstdesignpatterns
• Language: C#
• Homepage:
• Size: 117 KB
• Stars: 4
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# From Head First Design Patterns book



  

  
Remember, knowing concepts like abstraction, inheritance, and polymorphism do not make you a good object oriented designer. A design guru thinks about how to create flexible designs that are maintainable and that can cope with change.



Creational Patterns





  

  


Factory Method

  
Provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.










  

  


Abstract Factory

  
Lets you produce families of related objects without specifying their concrete classes.










  

  


Singleton

  
Lets you ensure that a class has only one instance, while providing a global access point to this instance.





Structural Patterns





  

  


Adapter

  
Provides a unified interface that allows objects with incompatible interfaces to collaborate.










  

  


Composite

  
Lets you compose objects into tree structures and then work with these structures as if they were individual objects.










  

  


Decorator

  
Lets you attach new behaviors to objects by placing these objects inside special wrapper objects that contain the behaviors.










  

  


Facade

  
Provides a simplified interface to a library, a framework, or any other complex set of classes.










  

  


Proxy

  
Lets you provide a substitute or placeholder for another object. A proxy controls access to the original object, allowing you to perform something either before or after the request gets through to the original object.





Behavioral Patterns





  

  


Command

  
Turns a request into a stand-alone object that contains all information about the request. This transformation lets you parameterize methods with different requests, delay or queue a request's execution, and support undoable operations.










  

  


Iterator

  
Lets you traverse elements of a collection without exposing its underlying representation (list, stack, tree, etc.).










  

  


Observer

  
Lets you define a subscription mechanism to notify multiple objects about any events that happen to the object they're observing.










  

  


State

  
Lets an object alter its behavior when its internal state changes. It appears as if the object changed its class.










  

  


Strategy

  
Lets you define a family of algorithms, put each of them into a separate class, and make their objects interchangeable.

  




  

  


Template method

  
Defines the skeleton of an algorithm in the superclass but lets subclasses override specific steps of the algorithm without changing its structure.





  

  


  

  
About



  
Eric Freeman, Elisabeth Freeman "Head First Design Patterns" :blue_book:

  


Refactoring guru:orange_book:

  
:vs: Community 2019