On Sep 25, 2009, at 1:18 PM, Brendan Eich wrote:
I will stop the over-citing madness here and now :-P.
The struggle to formalize ArrayLike, which seems like a common goal
for ES the core language and for WebIDL's ES bindings, makes me want
to give an exception to the "catchalls considered harmful for new
interfaces" injunction. I agree that indexing into array-likes, with
no liveness magic, seems containable and desirable. ES folks haven't
nailed down ArrayLike yet (our fault) and we would benefit from
collaboration with WebIDL folks here.
So if you are doing more ArrayLike interfaces, let's keep talking.
Don't let at least my catchalls-considered-harmful statements stop
progress on ArrayLikes.
Perhaps when catchalls are considered for ECMAScript, there could b a
way to encapsulate the specific pattern of index access, so you can
have magical getters and setters for all index properties (integer
numbers in range to be an array index) without having to install a
full catchall for all properties.
Regards,
Maciej
