From: Justin To <tekmc@...>
Date: 2008-06-11T04:04:14+09:00
Subject: Re: Basic Tree Data Structure

Thanks Dustin, that clarifies one bit of the confusion, but I'm still 
puzzled:

Output: Parent
 in child node
 3 Parent
Output: Child 1
 in child node
 3 Child 1
 3 Parent   # Q1: Why does it go through the Parent again?
Output: Grandchild 1.1

class Tree
  def each
    puts "1"
    yield value   # Q2: Which block does this invoke?
    puts "2"
    @children.each do |child_node|
      puts "in child_node"
        child_node.each { |e| puts "3"; yield e;  } # Q3: Which block 
does this
                                                    #     yield invoke?
      end
  end
end

t.each { |x| puts "t.each"; puts x }

I'm trying hard to understand!! =D Thanks for the help!
-- 
Posted via http://www.ruby-forum.com/.