>> How would a new object abstraction T customize them just for instances of T?
>
> By writing its own custom iteration protocol via proxies with the iterate()
> trap implemented appropriately. E.g.:
>
> function MyCollection() { }
> MyCollection.prototype = {
> iterator: function() {
> var self = this;
> return Proxy.create({
> iterate: function() { ... self ... },
> ...
> });
> }
> }
I left out the last step: clients would then use this via:
var coll = new MyCollection();
...
for (var x in coll.iterator()) {
...
}
Dave
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