From: "Hal E. Fulton" <hal9000@...>
Date: 2002-06-13T03:02:09+09:00
Subject: Re: Trick or Bug?

----- Original Message ----- 
From: "Nikodemus Siivola" <tsiivola@cc.hut.fi>
To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
Sent: Wednesday, June 12, 2002 5:26 AM
Subject: Trick or Bug?


> All this talk of block local variables reminded me of a funny trick...
> 
> As you know, receivers in ruby cannot change their class? No become, etc.
> Right?
> 
> Wrong:
> 
> #!/usr/bin/env ruby
> a = proc { a = 1 }
> puts "a is a #{a.class}"
> a.call
> puts "a is a #{a.class}"

Clever, but not correct, I think.
You've just pointed 'a' to a 
different object, not changed the 
class of the original object.

As I understand 'become' in Smalltalk
(and I don't really) doesn't it 
operate on an object?

Hal Fulton