From: "Ara.T.Howard" <ahoward@...>
Date: 2003-10-02T13:45:16+09:00
Subject: Re: mixing in class methods

On Thu, 2 Oct 2003, Gavin Sinclair wrote:

> It sometimes makes me wonder why Ruby differentiates between instance
> variables and class variables.  The latter seem exceptional, for a number of
> reasons.

~/eg/ruby > cat classvar.rb
class A
  @@a = 42 # i am a class var, and can be inherited
  @a = 42  # i belong to THIS instance of a class, class A
end

class B < A
  printf "@@a = <%s>\n", (@@a or 'nil')
  printf "@a = <%s>\n", (@a or 'nil')
end

~/eg/ruby > ruby classvar.rb
@@a = <42>
@a = <nil>


-a
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  | Ara Howard
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