From: Robert Klemme <shortcutter@...>
Date: 2010-10-21T23:46:13+09:00
Subject: Re: about handling args in block

On Thu, Oct 21, 2010 at 4:42 PM, salamond <jarodzz@gmail.com> wrote:
> Let's see if I get this.
> While I'm passing @left_node, and @right_node into this block,
> I'm passing the reference of these 2 objects into a block.
> Inside block, I can use these 2 references to modify the objects,
> but I can't change the reference themselves.

Exactly.

> Now here comes an update, is there a way to have the class destroy itself?

No.  Please note Ruby != C++.

> like
> class Node
> #snip
>    def destroy
>        self = nil
>    end
> end
>
> [@left_node, @right_node].each do |node|
>    node.destroy
> end
>
> Is it possible to have something like this work?
> When I try this, it said can't change the value of self.

Which is the truth.  Please read on object finalization in Ruby.

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/