Andrea Giammarchi wrote:
can I also suggest to analyze, if there's still any doubt left on a
method VS a property yet, this piece of code if not highlighted before?
I do not understand what you mean here.
Behavior in Safari and FirefoxNightly (V8 still by its own here)
```
var obj = JSON.parse('{"__proto__":[]}');
console.log(obj instanceof Array); // false
for(var key in obj) console.log(key); // logs: __proto__
obj[key || "__proto__"] = {};
console.log(obj instanceof Array); // false
// immutable via string
var obj = {"__proto__":[]};
console.log(obj instanceof Array); // true
for(var key in obj) alert(key); // never happens
obj[key || "__proto__"] = {};
console.log(obj instanceof Array); // false
// changed via string
```
Those look like two different kind of Object instance.
JSON is not JS.
I'm not sure what this has to do with anything discussed recently in
this thread.
We are not going to go around the "don't standardize __proto__" barn
again. Anyone trying to get web share with a new browser (which these
days must include "the mobile web") needs to implement __proto__. That's
why it is going into annex B at least.
/be
Nothing would ever happen with an explicit method instead and less
troubles in specs for JSON too (together with for/in loops and
property behavior with null objects and not null objects)
Thanks and Best Regards
On Mon, May 20, 2013 at 2:55 PM, Brendan Eich <[email protected]
<mailto:[email protected]>> wrote:
Andrea Giammarchi wrote:
that's fine with what I am thinking/saying ... it's used as
reflection, to intercept, or to trap, and not used to "do the
action" of setting the prototype so `Object` is, and you
confirmed this, a better place for `setPrototypeOf`
No, Brandon wrote:
"[for every meta-level operation], there is a corresponding
function in Reflect that does the default behavior for that
[meta-level operation]".
Don't confuse proxy handler traps with Reflect.* methods. This is
why Tom asked whether we really need Object.setPrototypeOf, given
the identital (in behavior, could even be the same function
object) Reflect.setPrototypeOf.
This all needs to be discussed at this week's TC39 meeting. Allen,
could you please add it to the agenda.
/be
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