From: Bertram Scharpf <lists@...>
Date: 2009-12-22T22:42:34+09:00
Subject: Re: Symbols vs. constants?

Hi,

Am Dienstag, 22. Dez 2009, 21:59:30 +0900 schrieb Rick DeNatale:
> On Tue, Dec 22, 2009 at 6:02 AM, Bertram Scharpf
> <lists@bertram-scharpf.de> wrote:
> >
> > Constants are variables:
> >
> >  X = "hello"
> >  X.freeze
> >  X.replace "hi again"  # forbidden (TypeError)
> >
> > But you can also freeze other variables:
> >
> >  x = "foo"
> >  x.freeze
> >  x.replace "bar"       # forbidden (TypeError)
> 
> No you can't freeze variables, you can freeze the objects they reference.

Yes, of course. I meant 'objects in regular, non-constant
variables'. Sorry for the sloppy phrase.

I just detected another thing: It is abolutely pointless to freeze
a symbol _object_.

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
*
Discover String#notempty? at <http://raa.ruby-lang.org/project/step>.