From: gwtmp01@...
Date: 2006-03-09T07:36:10+09:00
Subject: Re: globals outside of OO scripting


On Mar 8, 2006, at 4:53 PM, rtilley wrote:
> OK, but the script works wheter I use $ for globals and @ for  
> instance variables or not. With small scripts, why does it matter?

Whether you use globals or top-level instance variables for a small  
script is pretty much
irrelevant but what happens when your small script gets bigger or you  
want to reuse it in a larger
project?  Or you want to merge two small scripts to solve a slightly  
bigger problem?
You'll have to wrap you little script in a class anyway and in that  
context the globals/instance
variable solution isn't going to work.

Much easier just to wrap it all in a trivial class to start with as  
Ara suggested.
The very fact that you are using globals to provide a common state  
across functions
or function calls cries out for a class/object solution to package  
that state.

If it was drudgery to create a class then maybe it would be an issue
but it is soooo easy in Ruby, so why fight it?


Gary Wright