From: Robert Klemme <shortcutter@...>
Date: 2009-01-29T17:13:16+09:00
Subject: Re: Studying the object model

2009/1/29 Justin Collins <justincollins@ucla.edu>:
> Albert Schlef wrote:
>>
>> I'm looking for some study aid. I want to understand Ruby's object model
>> better.
>>
>> Is there some tool that takes some object as input and shows its
>> inheritance chain, it's instance and class variables, the singleton
>> classes and all?
>>
>> I've already seen some diagrams that explain how OOP work in Ruby, but
>> I'd still like to see all this in my own eyes.
>>
>
> I think you want something more visual than this (?) but you can always just
> ask Ruby itself:

Here's an easy way to get a visual graph of the currently defined
class hierarchy:

ruby -r pp -e 'tree = Hash.new {|h,k| h[k] = Hash.new(&h.default_proc)}
ObjectSpace.each_object(Class) {|cl| tree[cl.superclass][cl] = tree[cl]}
pp tree[Object]'

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end