From: ahoward <ahoward@...>
Date: 2003-01-22T14:59:44+09:00
Subject: Re: accessors for module instance vars

On 22 Jan 2003, Phil Tomson wrote:

> That's certianly one way to do it...  I guess I'm looking at Evolvable as
> more of a namespace than a class that defines an object, though.

a singleton is really nothing more than an encapsulation of some data and some
methods - just like a namespace - but i understand your objection

> And if I leave it as a module it could be mixed into a class later (though
> that's not how I'm using it now) and all of the 'module instance variables'
> would also end up in the class it was mixed into....

i don't think it works that way :

  module M
    attr_accessor :x
    @x = 42
  end

  class Foo; include M; end

  p Foo.new.x  # >> nil

the instance variable STAY in M, that's what i was referring to when i said i
was unsure of the semantics.

-a

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