From: Martin DeMello <martindemello@...>
Date: 2003-12-29T14:11:48+09:00
Subject: Re: Inconsistent value of uninitialized variable

Nathaniel Talbott <nathaniel@talbott.ws> wrote:
> Isn't it this behavior that makes it possible to define a recursive 
> block?
> 
>    y = 0
>    x = proc{y += 1; x.call unless(y == 100); y}
>    p x.call
> 
> I suppose you could require a prior assignment to x in this case, but 
> that starts to smell like having to declare variables...

This is not a proper recursive block - for instance

y = 0
x = proc{y += 1; x.call unless(y == 100); y}
z = x
x = nil
z.call

martin