Re: Array property of custom object

On Tuesday, May 3, 2016 at 6:49:08 PM UTC+3, Boris Zbarsky wrote:
> On 5/3/16 11:28 AM, Mihai Dobrescu wrote:
> > Now, I have the question how could I use js::proxy to attain my goal, being aware of its drawbacks. I'm sure it involves memory fragmentation and cpu load.
> 
> I don't see why it would involve "memory fragmentation".
> 
> To use a js::Proxy, you define an appropriate proxy handler to do 
> whatever you want.  Basically, you directly implement the various 
> internal methods from the ES spec for your object.
> 
> http://mxr.mozilla.org/mozilla-central/source/dom/base/WindowNamedPropertiesHandler.cpp 
> has an example of a simple proxy that you might be able to repurpose.
> 
> > Will it make possible to simply iterate too?
> 
> I don't know what you mean by "iterate" exactly, but obviously a proxy 
> would allow you to do for-in enumeration (via 
> getOwnEnumerablePropertyKeys) and you can always do for-of iteration by 
> providing an iterator implementation for your object.
> 
> -Boris

By iteration I mean to loop through array's elements.