From: Liam <ruby-talk@...>
Date: 2007-12-08T01:28:01+09:00
Subject: Re: Dynamic local vars

On Fri, Dec 07, 2007 at 10:06:15PM +0900, Tim Hunter wrote:
> Hmmm...local variables are called local because they're local to the 
> method that uses them. A variable that's shared between two methods 
> isn't local.
> 
> If foo and bar are both methods in the same class, use instance 
> variables. If they're not both in the same class, use global variables.
 
Do they need to be "variables"?


def bar(arg1,arg2)
  klass=class << self; self; end
  klass.send(:define_method,:x) { arg1 }
  klass.send(:define_method,:y) { arg2 }
end
def foo
  bar(42,23)
  puts x,y
end
foo

Of course, x and y continue to exist after the scope of foo, but with a
little more wrapping, you could solve that, too.  You could create
setters, but they'd have to be accessed like "self.x=".