I would say limit is around 2^24 entries (biggest fixed array can have
approx 2^27 entries and hash table requires 3 entries per key-value pair
and tries to maintain 50% occupancy). But overheads for mutating such a
table become less than reasonable way beyond this point.

Vyacheslav Egorov
 On Aug 18, 2012 4:34 PM, "Joran Greef" <jo...@ronomon.com> wrote:

> I am using a vanilla {} as a hash with 24 byte string keys. It currently
> has 5,500,000 entries.
>
> Is there a limit to the number of properties in such an Object?
>
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