On Jun 26, 2011, at 3:05 PM, Allen Wirfs-Brock wrote: > On Jun 26, 2011, at 8:48 PM, Brendan Eich wrote: > >> But I still wonder if we wouldn't be better off restricting where super can >> occur. I can't prove it, but we are following in the universal-'this' >> footsteps (but with static or else Object.defineMethod binding). That sounds >> a warning bell in my head. > > While I highly support improving ECMAScript's declarative mechanisms for > defining object abstractions I'd be pretty concerned if we had object > abstraction forms that can only be created declaratively. The ability to use > reflection to construct such abstractions has already proven its worth both > in JS and in other languages. Having forms of methods that can't be created > via reflection seems a step backwards.
I agree, but I'm not talking about such a declarative-only, no-imperative restriction as such. Rather, an essentially grammatical restriction on where 'super' can be used. But I'm not selling it, just discussing it, so don't worry. > BTW there are other proposals floating around that also have this > characteristic, for example perhaps some of the private property proposals. > We need to be concerned about those too. Not the only one that matters: http://wiki.ecmascript.org/doku.php?id=harmony:private_name_objects It has only imperative API via a built-in module. So if anything, it's missing declarative syntax. > It is important to find a good balance between power and bullet-proof > footwear. But, intentionally restricting an imperatively constructed object > from using |super| in order to prevent foot shooting seems very un-JS like. I know, I think I said that too :-P. That is, JS has the bamboo tube, saltpeter, and other raw ingredients like unbound 'this' projectiles for James Tiberius Kirk, captain of JS hacking, to assemble a bazooka the hard way, to conquer the big lizard-alien programming problems. But lesser mortals sometimes have it blow up in their faces, shoot backwards, take off a leg, etc. Gotta admit, universal 'super' with defineMethod hangs together -- it would be easy to implement. > More tomorrow, goodnight. Goodnight! /be _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
