[whatwg] DOMTokenList is unordered but yet requires sorting

[João Eiras]

On Mon, 15 Jun 2009 21:38:05 +0200, Darin Adler <darin at apple.com> wrote:

> On Jun 15, 2009, at 12:22 PM, Ian Hickson wrote:
>
>> On Tue, 9 Jun 2009, Erik Arvidsson wrote:
>>>
>>
>>> I was about to follow up on this. Requiring sorting which is O(n
>>> log n) for something that can be done in O(n) makes thing slower
>>> without any real benefit. Like João said the order should be
>>> defined as the order of the class content attribute.
>>
>> Fair enough. Done.
>
> Since DOMTokenList requires uniqueness, then I suspect it's still O(n
> log n) even without sorting, not O(n).
>
>      -- Darin
>

Oh, I have forseen that. Is it really necessary to remove duplicates ?
I imagine DOMTokenList to be similar to what can be achieved with a String.split(), but then it would be just more duplicate functionality.