What is the status of Weak References?
bruant.d at gmail.com
Fri Feb 1 07:07:54 PST 2013
Le 01/02/2013 15:53, Brandon Benvie a écrit :
> It's not possible to polyfill or emulate weak references (or WeakMaps
> for that matter) in JS without completely disengaging from using the
> host JS engine's object model.
For all practical purposes, you've done such a thing yourself
> In Continuum, for example, I can get close but not quite all the way
> to emulating WeakMaps using a meta-interpretive approach to the object
> model (each object in the VM corresponds to one or more objects in the
> host engine). Eventually I'll switch to switching to using my own
> typedarray-backed heap with a GC in order to fully realize the
> semantics of WeakMaps.
There are probably minor limitations to your above implementation, but I
wonder if they're worth the trouble to move to a typedarray heap. It's
your call not mine anyway :-)
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