Use Python/Ruby/Java to implement classic design patterns in Object-Oriented Programming. This repository also include some example code snippets borrowed from open source codes in classic python libraries I've read. I will update them continually.

Now, I have updated several design patterns as follows:
###Creational Patterns

• Abstract Factory
• Builder
• Prototype
• Factory Method
• Singleton {从Java实现Singleton模式的一个bug到Java内存模型}

###Structual Patterns

• Adapter {Adapter to implement Duck Type in java}
• Bridge
• Composite
• Decorator {Using Java annotations to implement decorator pattern} {cache property} {Jointer in Guava}
• Facade
• Flyweight
• Proxy {copy on write with Proxy}

###Behavioral Patterns

• Chain of Responsibility
• Command
• Interpretor
• Iterator
• Mediator
• Memento
• Observer

##Reference:

• Design Patterns-Elements of Reusable Object-Oriented Software.
• Design Patterns Stories
• faif/python-patterns (Github)