Hash implementation quality being equal, C++ may be faster for hash inputs 
greater than N bytes where the cost of jumping between JS and C++ does not 
outweigh the benefit. For keys smaller than N bytes, hashing in JS may be 
faster.

On Wednesday, May 30, 2012 6:17:17 PM UTC+2, Mark Hahn wrote:
>
> Are you talking about calculating the hash in javascript?  If so then a 
> third way, using a C++ extension, would be much faster than either 31 or 32.
>
> On Wed, May 30, 2012 at 8:05 AM, Joran Greef <jo...@ronomon.com> wrote:
>
>> If you're doing 32-bit hashes in Javascript and are willing to trade a 
>> bit, then a 31-bit hash may be at least an order of magnitude faster: 
>> https://groups.google.com/d/msg/v8-users/zGCS_wEMawU/6mConTiBUyMJ
>>
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