From: HarryO <harryo@...>
Date: 2001-07-10T12:31:56+09:00
Subject: [ruby-talk:17588] Re: Constants and Variables

In article <8lt27.86943$2u2.2069294@e420r-sjo2.usenetserver.com>, "Dave
Thomas" <Dave@pragmaticprogrammer.com> wrote:

> "HarryO" <harryo@zipworld.com.au> writes:
> 
>> > If you want objects that don't change, try Object#freeze,
>> > Object#frozen?.
>> 
>> Here's a thought ... why not just say that freeze is the only way
>> things are made immutable?  Then, could we not have code like ...
>> 
>>    MAX_SIZE = 100.freeze
>> 
>> to define that MAX_SIZE is a constant?
> 
> Because that freezes the object that MAX_SIZE references, not MAX_SIZE
> itself.

Of course!  Sorry, I should have realised that.

However ...  I figured I could then do 

	max_size = 10
	max_size.freeze
        max_size = 5					# 3
        puts "max = #{max}"		 # 4

and line 3 would produce an error, line 4 would print 10.

However, that doesn't work.  I get no errors and max_size prints as 5.

Am I just really thick, or is there a bug here?

By the way, I'm running 1.7.1 as built July 3rd.