Mauricio FernáÏdez wrote:
> On Sun, Jul 20, 2003 at 02:22:37PM +0900, Joel VanderWerf wrote:
> 
>>As you say, there is only one true; but you still can save state in it:
>>
>>irb(main):001:0> true.instance_eval {@x = 1}
>>1
>>irb(main):002:0> true.instance_eval {@x}
>>1
> 
> 
> It's hard to achieve thread-safety that way.

No worse than a global var, anyway. It wasn't a serious suggestion, just 
a statement of surprise that it was even possible to set attributes of 
literals. You can do it for Fixums, too. (From reading the source, I 
seem to remember that it's not done by storing anything within the 
object, which is impossible with a Fixnum, but by a big hash mapping 
objects and instance var names to values.)