Updates:
Status: Accepted
Owner: [email protected]
Cc: [email protected]
Comment #13 on issue 1858 by [email protected]: Iteration over frozen
object is slow
http://code.google.com/p/v8/issues/detail?id=1858
What's mentioned in #9 isn't exactly true. Fast properties are described in
the descriptor array with attributes. We can clone the map, copy the
descriptor array and change the properties. If we also keep a transition to
that map, things will be pretty damn fast.
This exactly what adamk is working on in
https://codereview.chromium.org/14888005/.
The caveat: for now elements / JSArrays are not supported at all.
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