From: Devin Mullins <twifkak@...>
Date: 2005-09-27T21:14:33+09:00
Subject: Re: How each class splats

Robert Klemme wrote:

>Devin Mullins wrote:
>  
>
>>Oooh... not what I meant. :) I meant something like this:
>>
>>class B
>>  attr_reader :i, :v
>>  def initialize(i,v)
>>    @i, @v = i, v
>>  end
>>end
>>
>>class ArrayOfB < DelegateClass(Array)
>>  def each
>>    super { |b| yield b.i, b.v }
>>  end
>>end
>>
>>a = ArrayOfB.new [B.new(:a, 1), B.new(:b, 2)]
>>a.each { |i, v| puts "i = #{i.inspect}, v = #{v.inspect}" }
>>    
>>
>Interesting.  Why does it work?  Which method does the trick here?
>  
>
Mrh? ArrayOfB#each does the trick. You understand DelegateClass, no? 
(Probably much better than I do...)

>>>a.kind_of? Array
>>>      
>>>
>=> false
>  
>
>Hm...
>  
>
Yes, that's the downside, but it's not necessarily much of one, is it?

Devin