From: Justin Collins <collinsj@...>
Date: 2006-07-26T05:10:17+09:00
Subject: Re: "Self" confusion

Justin Collins wrote:
> 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
>

I meant to add some "I think"s and "I guess"s in there somewhere.

-Justin