On Jul 10, 2011, at 12:02 PM, Dmitry A. Soshnikov wrote:
> On 10.07.2011 22:44, Brendan Eich wrote:
>>
>> On Jul 10, 2011, at 10:40 AM, Dmitry A. Soshnikov wrote:
>>
>>> On 10.07.2011 21:23, Brendan Eich wrote:
>>>>
>>>> On Jul 10, 2011, at 10:18 AM, Rick Waldron wrote:
>>>>
>>>>> The more I think about it, I still can't come up with any really exciting
>>>>> use cases where Array.of would outshine anything that already exists. I
>>>>> say strike it from the wishlist.
>>>>
>>>> Higher-order programming with Array as constructing-function bites back
>>>> for the single-number-argument case. That's where Array.of helps.
>>>>
>>>
>>> You mean when `Array` itself is passed as an argument?
>>>
>>> var o = (function (ArrayConstructor, ...rest) {
>>> return ArrayConstructor(...rest);
>>> })(Array, 10, 20, 30);
>>
>> Yes. Now consider the case where you leave out the 20 and 30.
>>
>
> return ArrayConstructor(rest[0]) ?
The called function taking ArrayConstructor cannot assume it was passed only
one trailing parameter captured by ...rest!
> May I ask to show nevertheless how you want to apply here Array.of?
You would pass Array.of instead of Array, of course.
> P.S.:
>
> If this is a wish-list of extending standard array lib, we can consider also
> the following:
A postscript is no place for more wish list items. See the subject: and start a
new thread.
/be
>
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