From: shasckaw <shasckaw@...>
Date: 2004-02-09T06:27:16+09:00
Subject: Re: role pattern lib for ruby

Robert Klemme wrote:
> "shasckaw" <shasckaw@skynet.be> schrieb im Newsbeitrag
> news:401ee616$0$320$ba620e4c@news.skynet.be...
> 
>>Thansk for the link, it looks interesting but it is perhaps too complex
>>for what I intend to do. But I can give it a try... well, I'd be happy
>>to try it but there isn't any files in the package, and project activity
>>is near to death. I'll try to get more info about it, but I haven't much
>>hope.
>>
>>If anyone has another solution, please help me!
> 
> 
> Depending on what you need to do it might even be built into the language
> already.  If you only need to add roles over time you could define some
> modules for the roles and add them as needed:
> 
> irb(main):001:0> class Foo;end
> => nil
> irb(main):002:0> f=Foo.new
> => #<Foo:0x1019dfe0>
> irb(main):003:0> f.respond_to? :inject
> => false
> irb(main):004:0> f.extend Enumerable
> => #<Foo:0x1019dfe0>
> irb(main):005:0> f.respond_to? :inject
> => true
> 
> Other than that SimpleDelegator might help you as well:
> http://www.rubycentral.com/book/lib_patterns.html
> 
>     robert
> 
> 
I'll try that way,
thanks for the advices,
Lio