Object.getPrototypeOf(arguments) VS [[Class]]

Andrea Giammarchi andrea.giammarchi at gmail.com
Wed Nov 28 09:56:29 PST 2012

object instanceof Object && !object.propertyIsEnumerable('**length')

every Array will be ... uhm, I remember the trick then was about looping
through for/in ... problem is, if length is 0 there's no way to udnerstand
if that object is arguments or not.


On Wed, Nov 28, 2012 at 9:44 AM, Brendan Eich <brendan at mozilla.org> wrote:

> object instanceof Object && !object.propertyIsEnumerable('**length')
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