On Thu, May 13, 2010 at 5:34 PM, Mark S. Miller <erig...@google.com> wrote:
> On Thu, May 13, 2010 at 5:15 PM, Vladimir Vukicevic <vladi...@mozilla.com>
> wrote:
>>
>> This is difficult to do, given the goals of typed arrays -- they wouldn't
>> behave like normal Arrays in most meaningful ways. At the core, an
>> ArrayBuffer is of fixed size, and it doesn't make sense to index an
>> ArrayBuffer directly (because there's no indication of what format the data
>> should be accessed in). Making the array view types instances of Array
>> might work, but again given that they're fixed length, there's a significant
>> difference there.
>
> in ES5:
> var x = [];
> for (var i = 0; i < N; i++) {
> x.push(0);
> }
> Object.seal(x);
That is verbose.
> The x that results from the above code is fully populated, of fixed length,
> and must remain fully populated. It is much closer to what programmers
> coming from other languages might regard as an array.
A FixedArrayLiteral would be better but the language does not have
such construct.
var noElisions = [ length:N, sealed: true ];
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