From: "Booker C.Bense" <bbense+comp.lang.ruby.Apr.04.07@...>
Date: 2007-04-05T06:35:06+09:00
Subject: Re: Everything is a object?

In article <5e85406fd17fc7cc59e2cbb2e1503c00@ruby-forum.com>,
Jamal Soueidan  <jkhaledsoueidan@gmail.com> wrote:
>
>Ruby understand that everything start with @ is a object, either 
>reference or a type.
>
>like in other language
>
>@var = &reference
>@var = object
>
>when I type it
>
>if var.nil?
>
>var is unknown?
>
>it's not variable, neither object? what is it? nobody knows, throw 
>exception to the bad coder :P
>

Ruby variables aren't quite what you expect. They are merely
labels that point to existing objects, they have no inhernet
existance in and of themselves. Ruby will "autocreate" objects
along the way, but IMHO it requires thinking about variables in 
a much different way that most other languages use the term 
variables. 

Personally, I think this is a least an interesting if not good
thing. It requires that you think in different ways about how 
variable work. 

The problems you are having is that you are making method
calls on non-existant objects. It's like handing a NULL pointer
in C to a function that expects a pointer. 

_ Booker C. Bense