From: Sebastian Hungerecker <sepp2k@...>
Date: 2010-05-16T01:19:04+09:00
Subject: Re: Hash method in ruby

On 15.05.2010 17:55, Tarun Yadav wrote:
> Thanks Jean,
>
> Can you please confirm the difference between these:
>
> A.class.hash  #calls the hash method from Class class
>
> A.new.hash  #calls the hash method from A(if overridden otherwise method
> from Object)
>
> A.hash #? not able to understand what hash method is called. What kind
> of object is A?
>    

A is an object of class Class. Thusly A.class returns Class.
Class is also an object of type class, but a different one,
so it has a different hash code.

Note that:
 >> A
=> A
 >> A.class
=> Class
 >> A == A.class
=> false
 >> A.class == Class
=> true
 >> A.class.hash == Class.hash
=> true
 >> A == Class
=> false
 >> A.hash == Class.hash
=> false
 >> A == A.class
=> false
 >> A.hash == A.class.hash
=> false