From: Justin Collins <collinsj@...>
Date: 2006-07-26T05:03:21+09:00
Subject: Re: "Self" confusion

Leslie Viljoen wrote:
> Can someone explain why the following produces different results? In
> another question I wrote that by default, programs run inside the
> definition-space of Object, but now I think that I was wrong:
>
> class Yoghurt
>  def self.a
>    "yoghurt self"
>  end
>  def Yoghurt.a
>    "yoghurt"
>  end
>
>  p Yoghurt.a
>  p self.a
> end
>
>
> def self.a
> "object self"
> end
> def Object.a
> "object"
> end
>
> p Object.a
> p self.a
>
> ------------------------Output:
> "yoghurt self"
> "yoghurt self"
> "object"
> "object self"
>
Really? Because I get:

"yoghurt"
"yoghurt"
"object"
"object self"

:)

I thought the top-level stuff rain inside an instance of Object?

Try:

p Object.class #=> Class, naturally
p self.class #=> Object

class A
    p self.class #=> Class
end

a = A.new

class<<a
  p self.class  #=> Class
end

So, if we were really in the definition space of Object, then self.class 
would be class, not Object.


-Justin