Execution scope of Ruby artifacts running outside of an obje


#1

Hi folks,

What is the scope of execution of a plain old Ruby script?

For example, if you write a script that does not define any classes
and you use reflection to get the current class, you discover that it
is “Object”.

Eg on Windows:

echo puts “#{self.class}” > temp.rb
ruby temp.rb
Object

I am interested in where this behavior is defined. I didn’t see any
mention of this in the Pickaxe2 book, but I could have overlooked it.


#2

Griff wrote:

echo puts “#{self.class}” > temp.rb
ruby temp.rb
Object

I am interested in where this behavior is defined. I didn’t see any
mention of this in the Pickaxe2 book, but I could have overlooked it.

From the Pickaxe, 2nd Edition, page 11:
“Everything you manipulate is an object, and the results of those
manipulations are themselves objects.”

Every single thing you use, is derived, in the end from Object, the
great-grandfather of everything Ruby. At least that is how I’ve
understood the Pickaxe in that regard.

On the other hand, I only hack Ruby into my keyboard, and don’t hack
Ruby. :wink:

Cheers

-Phil


#3

On Thu, Mar 22, 2007 at 12:05:07AM +0900, Griff wrote:

Object

I am interested in where this behavior is defined. I didn’t see any
mention of this in the Pickaxe2 book, but I could have overlooked it.

This top-level object is called “main” (try puts self.inspect, or indeed
look at the prompt which irb gives)

There is a brief description in Pickaxe2 on page 376 (PDF page 404)


#4

Sorry, Page not found!

There is a brief description in Pickaxe2 on page 376 (PDF page 404)

I couldn’t resist.