On Nov 17, 2011, at 2:05 PM, Brendan Eich wrote:
> On Nov 17, 2011, at 9:04 AM, Allen Wirfs-Brock wrote:
>
>> OK, I have a fix for the missing constructor problem. See:
>> http://wiki.ecmascript.org/doku.php?id=strawman:class_operator#missing_constructors
>>
>
> Nit: [[ctor]], obviously a temporary hack-name. How about
> [[ClassConstructor]]? or maybe [[DefaultConstructor]]?
:-)
>
> Non-nit: don't we want inherited 'constructor' to work, unless it has the
> value Object?
let BasicPoint = class {x:0, y:0, constructor() {}};
let BetterPoint = class BasicPoint <| {better: true};
let bp = new BetterPoint;
print(bp.better ? "wrong: bp [[Prototype]] is BasicPoint. prototype" :
"correct: bp [[Prototype]] is BetterPoint.prototype");
BetterPoint needs a [[DefaultConstructor]] for the same reason that the
original Point example does.
We can debate whether Default Constructors should do a:
if (super.constructor isnt Object) super.constructor()
but that is a more basic question about whether constructors (default or
otherwise) should always do implicit super calls.
Allen
_______________________________________________
es-discuss mailing list
[email protected]
https://mail.mozilla.org/listinfo/es-discuss
