Array.prototype.contains

Mark S. Miller erights at google.com
Sat Nov 3 16:53:55 PDT 2012


On Fri, Nov 2, 2012 at 5:26 PM, Allen Wirfs-Brock <allen at wirfs-brock.com>wrote:

>
> Also any reason contains should be provided for WeakMap? I not seeing why
> it shouldn't be there too.
>

Yes!

The set of values actually contained by the WeakMap at any moment is
non-deterministic, depending on the scheduling of gc. But this
non-determinism is non-observable. WeakMap.contains would make it
observable.


-- 
    Cheers,
    --MarkM
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20121103/312e5525/attachment-0001.html>


More information about the es-discuss mailing list