[Newbies] 'locking' an object

[Sean Allen]

On Oct 2, 2008, at 1:18 PM, Bert Freudenberg wrote:

> Well, it's hardly a beginner's topic, but you could make your class  
> use a modified compiler that protects instance variable assignment  
> by the check of an "immutable" flag.
>
> This is basically how Avi's WriteBarrier works.

I'm going to have to load that into an image and take a look at that.
The description is intriguing.