Anne van Kesteren (2013-11-01T17:40:17.000Z)
domenic at domenicdenicola.com (2013-11-12T18:52:50.886Z)
On Fri, Nov 1, 2013 at 12:50 AM, Allen Wirfs-Brock <allen at wirfs-brock.com> wrote: > ```js > [isSpecialString]() {return isSpecialString in this}; > ``` So this is basically what we have for DOM objects right now. And what we're asking for is having this elevated to language-supported construct. Be it in the form of a method or something else. It's not really clear why sometimes you would use if `brand in obj` and other times `Array.isArray(obj)`. Seems rather messy.