On Nov 5, 2011, at 3:50 PM, Erik Arvidsson wrote:
> On Sat, Nov 5, 2011 at 14:41, Brendan Eich <[email protected]> wrote:
>> 1. Should an array pattern always query 'length'?
>>
>> 2. If the answer to (1) is "no", then should ... in an array pattern query
>> 'length'?
>>
>> On reflection and at this point in the thread, with your reply in mind, my
>> prefs in order: [no, yes], [no, no]. In no case do I favor [yes]. I'm
>> refutably matching [no, _] :-P.
>
> If we don't do start index to length - 1 then we have to determine the
> enumeration method. Is it?
>
> A) own properties
> B) all properties
For {x, y, ...r} = o the answer would be (B) -- if o = {w:0} <| {x:1, y:2,
z:3}, then r would be {w:0, z:3}.
> C) object[iterator]() and ignore the items before start index
Iteration is for the "value domain", so I wouldn't mix it in here in key-land.
/be
>
> Maybe C is preposterous but just putting it out there for consistency.
>
> --
> erik
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