On 28 October 2013 21:20, Boris Zbarsky <[email protected]> wrote: > As far as I can tell, the two places in ES5 that test [[Class]] being equal > to "Array" are Array.isArray() and Array.prototype.concat. > > In ES6, the former does some sort of brand check, but the latter calls > IsConcatSpreadable, which checks for a @@isConcatSpreadable symbol. > > It seems to me like we should probably have ArrayClass objects return true > from the @@isConcatSpreadable symbol.
Honestly, I think we should rather get rid of @@isConcatSpreadable. It's far too special-cased (extending the object protocol for a single random method?). Why can't we simply use @@iterator instead? /Andreas _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
