Object id, hash, etc?

Brendan Eich brendan at mozilla.org
Wed Sep 9 18:51:41 UTC 2015

Michael McGlothlin wrote:
> I'm only seeing a couple comments there - was that all or am I missing something?

Did you read the note about security?

> I think hashes as an overwritable method that returns a number is pretty standard and let's you combine member hashes with simple Bitwise ops. Could have on value types and a default on Object that would combine hash of own props that were value types or frozen.

As others noted, WeakMap sucks a lot of the O2 away from any hashcode 

Map and Set do need a way for objects (not value types) to hash and 
compare, IMHO, but that was deferred to ES7/2016 or later.


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