From: ts <decoux@...>
Date: 2002-01-01T23:56:48+09:00
Subject: [ruby-talk:29961] Re: Ruby multi-dimensional Hash question?---Any one out there willing to give this questions a try?

>>>>> "C" == Chr Rippel <chr_news@gmx.net> writes:

C> p t          # => {}
C> p t[1][0] # => 4
C> p t[0][1] # => 2

C> i.e. you also have to redefine MyHash#inspect, MyHash#keys etc.

 Why not ?


pigeon% cat b.rb
#!./ruby
class MyHash < Hash
   def initialize
      super do |i, j| __default(i, j)  end
   end
   private
   def __default i, j
      i[j] = MyHash.new
   end
end

t = MyHash.new
t[0][1] = 2
p t[0]
p t[0][1] # => 2
t[1][0] = 4
p t[0]
p t[1]
t[2][3][6] = 12
p t.keys
p t[2]

pigeon% 

pigeon% b.rb
{1=>2}
2
{1=>2}
{0=>4}
[0, 1, 2]
{3=>{6=>12}}
pigeon% 



Guy Decoux