From: Ashley Moran <work@...>
Date: 2006-07-26T16:43:10+09:00
Subject: Re: get caller of method

On Sunday 23 July 2006 22:55, Sean O'Halpin wrote:
> Hi,
>
> It's not clear to me what you're doing with the binding. You don't
> need it for your example and it won't work the way you seem to think.
>
> The example below shows you don't need to do anything fancy to get hold of
> self:
>

< SNIP bit that shows me up as clueless :) >

>
> Please feel free to correct me if I've gotten hold of the wrong end of
> the stick (it has been known ;)
>
> Regards,
> Sean


Hi Sean

Seems I misunderstood the scope of "self".  I assumed that since a Food 
instance was calling a method in another object (the application instance of 
Object) that self would be the global "main" object.  IE:

irb(main):003:0> class Foo
irb(main):004:1>   def test
irb(main):005:2>     global_test
irb(main):006:2>   end
irb(main):007:1> end
=> nil
irb(main):008:0> def global_test
irb(main):009:1>   puts self.class
irb(main):010:1>   puts self.inspect
irb(main):011:1> end
=> nil
irb(main):012:0> Foo.new.test

I expected:
Object
main

But you actually get:
Foo
#<Foo:0x8143b18>


I have to say, I don't understand this behaviour.  Maybe I am missing 
something.  I assume it is to do with class nesting?

Ashley

-- 
"If you do it the stupid way, you will have to do it again"
  - Gregory Chudnovsky