From: Enrique Comba Riepenhausen <ecomba@...>
Date: 2007-05-09T15:56:01+09:00
Subject: Re: [ANN] - Ruby Patterns

Hi John!

Thanks for the warnings ;)

Actually I am not only trying to translate the GoF patterns into  
Ruby, there are zillions of different patterns...

"Each pattern is a three-part rule, which expresses a relation  
between a certain context, a problem, and a solution." as Christopher  
Alexander says.

And I don't believe that this cases don't apply for Ruby, they just  
do it in a different way. If you take the creational patterns in GoF  
they might be differences in the implementation, but the problems  
still exists...

I will not be disappointed ;) Ruby is powerful! But with any language  
in the world you can use it wrong and lose most of it's power...

Cheers,

Enrique Comba Riepenhausen

On 9 May 2007, at 00:27, John Carter wrote:

> On Tue, 8 May 2007, Enrique Comba Riepenhausen wrote:
>> I come from a Java environment (have been coding in Java for the  
>> past 11 years) and I must admit that I was amazed by Ruby when I  
>> stumbled onto it not long ago.
>>
>> One of my hobbies has always been the study of design patterns,  
>> refactoring, etc... And in general the way we can improve code to  
>> make it more maintainable, etc.
>
> Be warned that several Javarish design patterns become practically
> null ops in Ruby because...
>   * Everything in Ruby, including and especially Classes are objects.
>   * Everything in Ruby is open for extension at compile time.
>   * The Ruby module / class structure is hackable at run time.
>
> Thus, especially the construction patterns from the GoF practically
> vanish into the background of ruby just doing what ruby does.
>
> So don't be disappointed when some of your Design Pattern translation
> efforts seem to give trivial results, that should be make you say Wow!
> Ruby is powerful!
>
>
> John Carter                             Phone : (64)(3) 358 6639
> Tait Electronics                        Fax   : (64)(3) 359 4632
> PO Box 1645 Christchurch                Email : john.carter@tait.co.nz
> New Zealand
>
>