From: Freak Guard <freakguard@...>
Date: 2009-11-20T00:59:14+09:00
Subject: Re: dynamic array?

Marnen Laibow-Koser wrote:
> 
> Hmmm...another approach:
> 
> class DynamicArray < Hash
>   attr_reader :length
> 
>   def initialize(length)
>     @length = length
>     super() {[]}
>   end

... which doesn't fulfull the inital target of to not have to set the 
length static :)

>   def []=(i, value)
>     super
>     @length = [i + 1, length].max
>   end
> 
>   def to_a
>     (0..length).to_a.collect{|i| self[i]}
>   end
> 
>   def each(&block)
>     self.to_a.each block
>   end
> end
> 
> ...and delegate everything else to self.to_a.

Probably I'll just implement length as a method and it should work.
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