From: Mike Perham <mperham@...>
Date: 2007-11-14T06:49:17+09:00
Subject: recursion with blocks

I have a tree structure where I want to walk the structure and find a
node based on a name.  I'm unclear how to use recursion with blocks such
that I can return the correct node.  All code snippets I've seen have
involved using "puts" to print out a node i.e. not returning anything to
the top-level caller.  What's the idiomatic Ruby for doing this?  How do
I return a value from a block called recursively?
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