Object ID's

[Graydon Hoare]

Brendan Eich wrote:

> Would this be enough? If so, I think TG1 ought to consider it. It  
> would be a small addition to the standard library.

This sort of thing -- either in app frameworks or the standard library 
-- was certainly the purpose of adding intrinsic::hashcode. I hoped to 
do a whole container library in the process of ES4, but it got shelved.

> Flash Dictionary users who rely on weakKeys = true should pipe up for  
> the use-cases that require this.

I admit to not having considered that scenario. Perhaps a general 
Weak<T> type would do?

-graydon