From: Daniel Sheppard <daniels@...>
Date: 2007-06-12T15:42:09+09:00
Subject: Re: how to make a[2][2][3]=4 work?

> I know this can work,but I think it is suck
> a=Hash.new{|h,k|
>   h[k]=Hash.new{|h,k|h[k]=Hash.new{|h,k|h[k]={}}}
> }
> 
> p a[1]=1
> 
> a[2][1]=2
> a[2][2][3]=4
> a[3][1][1][1]=1
> p a

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