On Mon, Jul 11, 2011 at 8:32 AM, David Herman <[email protected]> wrote:
> > My point is that the map spec is a deterministic algorithm because > side-effects would be noticeable otherwise. However, this prevent > implementations where function calls would be done in parallel for instance > (for better performances). In some cases (like the one I showed), the exact > order in which the function calls are performed does not matter, but I have > no way to tell the JS engine "I don't need the execution order guarantee", > allowing it to do the calls in parallel. The addition of the functions I > suggested would be the way to say it. > > We can't do this in general for JS, especially for the mutable Array data > structure. It's not in general safe to run JS code in parallel. However, > this would be much more appropriate for immutable and homogeneous datatypes. > At least for callback code that could be proved to be safe to run > non-deterministically, operations like map could be run in parallel. We have > been working with some partners on this. Watch this space. > See also < http://wiki.ecmascript.org/doku.php?id=strawman:concurrency#map-reduce_lite> > > Dave > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss > -- Cheers, --MarkM
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