From: Andrew Gibson <gibson_andrew@...>
Date: 2006-05-02T05:05:35+09:00
Subject: Re: traversal of a tree + block code

Ahhh..found my solution:

  def self.depthFirstTraversal(parent , &block)
    children = parent.children
    children.each do |child|
      block[child]
      self.depthFirstTraversal(child, &block)
    end
  end

I'm not familiar with the [] for passing the argument to the proc(?) ... 
anyone have any comments?

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