Head First Design Patterns is a book that introduces a collection of design patterns and principles using humurous images and code written in Java. This respository contains code demonstrating these patterns other languages.
| Patterns | Writeup | Implementations |
|---|---|---|
| The Strategy Pattern | Link |   |
| The Observer Pattern | Link | |
| The Decorator Pattern | |
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| The Factory Method Pattern | |
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| The Abstract Factory Pattern | |
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| The Singleton Pattern | |
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| The Command Pattern | |
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| The Adapter Pattern | |
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| The Facade Pattern | |
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| The Template Method Pattern | |
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| The Iterator Pattern | |
Update A new version of the text was released in December of 2020! Find it on O'Reilly here
The text is a very approachable introduction to design patterns. If you have any Java experience, or are even just comfortable reading code and willing to learn a little, I recommend it.
The code from the book, as well as a number of free and/or alternate media design pattern resources are availble over at WickedlySmart's wesbite - link