From: Brian Candler <B.Candler@...>
Date: 2003-02-04T18:33:01+09:00
Subject: Re: Local variables & blocks

>   def weird
>     x = nil
>     [proc {x}, proc {|x|}]
>   end
> 
> What does it do?

It returns an array of two procs: one which gives you the current value of
x, and one which sets it to its argument. An attribute reader and an
attribute writer. It's that hidden state I was talking about.

Can you do this in other languages like Scheme, or is it an aberration of
Ruby? That's one thing I'm trying to get a handle on.

Regards,

Brian.