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Re: QSA, the problem with ":scope", and naming

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Sun, 30 Oct 2011 09:23:45 -0700
Message-ID: <CAAWBYDDMTHoPHcKZB4DFri1Q0H-RKY57UqgnVXyU2f9Eyp_WNA@mail.gmail.com>
To: Cameron McCormack <cam@mcc.id.au>
Cc: Alex Russell <slightlyoff@google.com>, Jonas Sicking <jonas@sicking.cc>, Webapps WG <public-webapps@w3.org>, Yehuda Katz <wycats@gmail.com>, John Resig <jeresig@gmail.com>, Paul Irish <paulirish@google.com>, Lachlan Hunt <lachlan.hunt@lachy.id.au>
On Sat, Oct 29, 2011 at 8:28 PM, Cameron McCormack <cam@mcc.id.au> wrote:
> On 20/10/11 3:50 AM, Alex Russell wrote:
>>
>> I strongly agree that it should be an Array *type*, but I think just
>> returning a plain Array is the wrong resolution to our NodeList
>> problem. WebIDL should specify that DOM List types *are* Array types.
>> It's insane that we even have a NodeList type which isn't a real array
>> at all. Adding a parallel system when we could just fix the one we
>> have (and preserve the value of a separate prototype for extension) is
>> wonky to me.
>>
>> That said, I'd *also* support the ability to have some sort of
>> decorator mechanism before return on .find() or a way to re-route the
>> prototype of the returned Array.
>>
>> +heycam to debate this point.
>
> Late replying here again, apologies, but I agree with others who say that an
> actual Array object should be returned from this new API given that it is
> not meant to be live.  What benefit is there from returning a NodeList?

If it's a NodeList (or something else that *subclasses* Array) we can
do fun things like add .find to it, which returns the sorted union of
calling .find on all the elements within it.  Returning a plain Array
doesn't let us do that.

~TJ
Received on Sunday, 30 October 2011 16:24:34 GMT

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