From: Dave Bass <davebass@...>
Date: 2008-06-06T20:09:47+09:00
Subject: Re: double assignation in a hash

Jes炭s Gabriel y Gal叩n wrote:
> For arbitrary hash nesting, try this:
> 
> irb(main):023:0> a = Hash.new {|h,k| h[k] = Hash.new(&h.default_proc)}
> irb(main):024:0> a[1][2][3][4] = "hello"
> irb(main):025:0> a
> => {1=>{2=>{3=>{4=>"hello"}}}}
> irb(main):026:0> a[1][2][3][4]
> => "hello"

Or this (longer but clearer IMO):

a = {}
a[1] = {}
a[1][2] = {}
a[1][2][3] = {}
a[1][2][3][4] = "hello"

print a[1][2][3][4]  # "hello"
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