Object ID's

[Neil Mix]

> a class with methods you have to call, say has, get, and
> put. No property lookup syntax for testing whether a word is in the
> dictionary, and no literal syntax for constructing instances by
> writing the key/value pairs in succession. But it could be part of
> the standard, so you could count on it everywhere.

Moving intrinsic::hashcode into this proposed class would assuage any  
concerns I have about the hashcode proposal.