From: Robert Klemme <bob.news@...>
Date: 2005-05-27T17:55:19+09:00
Subject: Re: hash of hash and complex data structure


Just for the record, as I don't see any post that actually shows code with
the block in this thread.

ngoc wrote:
> Hi
> I am perl programmer, looking for new tools and interested in Ruby
> How in ruby similar to perl
> $a{$b}{$c}{$d} = 1;

>> missing = lambda {|h,k| h[k] = Hash.new(&missing)}
=> #<Proc:0x10185800@(irb):21>
>> h = Hash.new(&missing)
=> {}
>> h[1][2][3] = 4
=> 4
>> h
=> {2=>{3=>4}}

> push @{$a{$b}} = 1;

>> h = Hash.new {|h,k| h[k] = []}
=> {}
>> h[1].push 2
=> [2]
>> h
=> {1=>[2]}

Kind regards

    robert