Array detection (was Re: Final iterator spec)

Peter van der Zee ecma at
Sun Mar 2 09:04:28 PST 2014

> Peter van der Zee <ecma at> wrote:
>>On Sun, Mar 2, 2014 at 4:18 AM, Domenic Denicola
>><domenic at> wrote:
>>> You can just do `if (Symbol.iterator in potentialIterable)`.
>>Does that work cross-frame?

On Sun, Mar 2, 2014 at 5:35 PM, Allen Wirfs-Brock <allen at> wrote:
> Yes

Okay, was wondering whether that could work for Array detection as
well. But perhaps that problem has already been solved, I haven't kept
up with that.

`if (Array[Symbol.isArray]) ...` feels like a fairly elegant cross
frame solution.

- peter

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