From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2010-01-26T06:40:44+09:00
Subject: Re: Nested hash with arrays for default value

On Mon, Jan 25, 2010 at 10:28 PM, Gary Wright <gwtmp01@mac.com> wrote:
>
> On Jan 25, 2010, at 2:24 PM, Glen Holcomb wrote:
>>
>> I'll play around with your solution.  I have the following:
>>
>> data = Hash.new { |l, k| l[k] = Hash.new { |l, k| l[k] = Hash.new { |l, k|
>> l[k] = Hash.new([]) }}}
>
> I'm assuming you want 'infinite' depth.  Consider:
>
> default = lambda { |h,k| h[k] = Hash.new(&default) }
> top = Hash.new(&default)

The problem is that he wants the leaves of the hash to be arrays, and
not hashes.

Jesus.