From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2010-10-15T00:10:56+09:00
Subject: Re: Freeze method doesn't work

On Thu, Oct 14, 2010 at 5:00 PM, Sergey U. <2ys.pro@gmail.com> wrote:
> Freeze should prevent further modifications to 'var'...
>
> mac-undrgrnd:~ yspro$ irb
> ruby-1.9.2-p0 > var = 4
>  => 4
> ruby-1.9.2-p0 > var.frozen?
>  => false
> ruby-1.9.2-p0 > var.freeze
>  => 4
> ruby-1.9.2-p0 > var.frozen?
>  => true
> ruby-1.9.2-p0 > var = 5
>  => 5
> ruby-1.9.2-p0 > var.frozen?
>  => false
> ruby-1.9.2-p0 >
>
> What's wrong?

Variables reference objects. It's the object you can freeze, not the
variable. If you make the variable point to a different object, the
original one is still frozen, but the new one maybe not.

Jesus.