From: James Edward Gray II <james@...>
Date: 2005-06-17T01:11:43+09:00
Subject: Re: hash of hashes by default

On Jun 16, 2005, at 11:07 AM, Belorion wrote:

> I want a Hash of Hashes.  Furthermore, I want it so that if a key for
> the first has does not exist, the default value is a new hash.

irb(main):001:0> foo = Hash.new { |hash, key| hash[key] = Hash.new }
=> {}
irb(main):002:0> foo["ii"]["jj"] = "Hello World."
=> "Hello World."
irb(main):003:0> foo["ii"]
=> {"jj"=>"Hello World."}
irb(main):004:0> foo["ii"]["jj"]
=> "Hello World."

Hope that helps.

James Edward Gray II