Previously I wrote a post about Design Patterns in Beanshell. Now I have converted them in ruby scripts. Some of DP implementations in Ruby does not make sense because of highly dynamic nature of this language.
Creational Patterns
Abstract Factory
Builder
Factory Method
Prototype
Singleton
Singleton (corrected)
Lazy Initialization
Structural Patterns
Adapter
Bridge
Composite
Decorator
Facade
Flyweight
Proxy
Behavioral Patterns
Chain of Responsibility
Command
Domain Function
Interpreter
Iterator
Mediator
Memento
Observer
Observer with Observer library
State
Strategy
Template Method
Template Method (corrected)
Visitor
Enterprise Patterns
MVC
Data Access Object
Map-Reduce
My main sources:
1. Design Patterns in Beanshell
2. Design Patterns in Ruby : web site and the book
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59 comments:
Hi Alex,
We met in Marquand park last year.
Great posts. I read the DP in ruby book as well.
Joey
Hi Alex,
This is a great effort. I own the design patterns book and would love to see it updated. What you're doing here makes design patterns even more accessible to ruby developers. I hope we can further develop what you have as a community resource, with more background descriptions, and possibly even a guide for when to use or not use a particular pattern.
It's particularly important to know the Ruby versions of these patterns so that we're not implementing the generic patterns when Ruby offers an even shorter more intuitive alternative.
Something to note. Looking at your "lazy initialization" pattern, I think I'd call that "virtual proxy". Wikipedia does a nice job of describing four patterns that fall under an umbrella of closely related patterns:
Lazy Loading
- Lazy Initialization
- Virtual Proxy
- Ghost
- Value Holder
Joe Chesak
It is rather interesting for me to read the post. Thank you for it. I like such topics and everything connected to them. I would like to read more on that blog soon.
Design Patterns in Ruby documents smart ways to resolve many problems that Ruby developers commonly encounter. Russ Olsen has done a great job of selecting classic patterns and augmenting these with newer patterns that have special relevance for Ruby. He clearly explains each idea, making a wealth of experience available to Ruby developers for their own daily work.
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