From: gz zz <gpygood@126.com>
Date: 2007-06-12T15:29:38+09:00
Subject: how to make a[2][2][3]=4 work?

a=Hash.new{|h,k|
  h[k]={}
}

p a[1]=1

a[2][1]=2
 #a[2][2][3]=4
p a

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