From: trans <transfire@...>
Date: 2009-10-03T04:20:24+09:00
Subject: Re: operating on a selection of objects



On Oct 2, 10:54 am, James French <James.Fre...@naturalmotion.com>
wrote:
> Hi,
>
> I want to be able to do operations to a selection of objects, something like this:
>
> class Config
>   attr_accessor :name
> end
>
> class ConfigSelection
>
>   def initialize(*configs)
>     @configs = configs
>   end
>
>   def name=(n)
>     @configs.each{|c| c.name = n}
>   end
>
> end
>
> a = Config.new
> a.name = "a"
>
> b = Config.new
> b.name = "b"
> s = ConfigSelection.new(a, b)
> s.name = "s"
>
> I was wondering if there might be a more elegant way of doing this, without having to explicitly duplicate all of Config's attributes in ConfigSelection?

  require 'facets/enumerable/every'
  s = [a,b]
  s.every.name = "s"