From: Austin Ziegler <austin@...>
Date: 2002-12-30T03:09:34+09:00
Subject: Re: yield and recursion

On Sun, 29 Dec 2002 20:56:58 +0900, Christoph Schmitz wrote:
> Hi all,
> 
> I was just trying to grasp the concept of iterators, and
> the first thing I tried was an iterator for a binary tree.
> 
> What I came up with is something like

class Node
  def inorder(&block)
    @left.inorder(block) unless @left.nil?
    yield @value unless block.nil?
    @right.inorder(block) unless @right.nil?
  end
end

-- Austin Ziegler, austin@halostatue.ca on 2002.12.29 at 13.08.00