From: Sam Kong <sam.s.kong@...>
Date: 2005-05-26T01:10:18+09:00
Subject: Newbie Question: Global variable vs. Top-level variable

Hi, group!

This morning, a question came into my mind (I'm still a newbie).
What's the meaning of a top-level variable?

t = "top"
$g = "global"

puts t
puts $g

def f
  puts t #error
  puts $g
end

f

I know that a top-level variable cannot be used in a method.

My questions are:

1. Do you use top-level variables instead of global variables if you
don't need to use it in a method? Is it a good practice to use it like
that?

2. What is a top-level variable? Is it an object variable or a local
variable or what?

3. What is the exact scope of a top-level variable?


Thanks.
Sam