this is really easy to fix via code but I would rather propose an
Array#compact() or Array#dense() method rather than changing everything
else (included shims/polyfills)
I really don't remember when it happened last time that I had to deal with
such kind of Arrays ... and this made already every p
On Mon, Nov 12, 2012 at 4:39 PM, Allen Wirfs-Brock wrote:
> So the question on the floor: is there any interest in having this
> variation of array iteration in ES6?
>
No. Why complicate the API with a feature just for people who use sparse
arrays on purpose? From what we hear, there are almost
On Nov 12, 2012, at 3:03 PM, Erik Arvidsson wrote:
> On Mon, Nov 12, 2012 at 5:39 PM, Allen Wirfs-Brock
> wrote:
> So the question on the floor: is there any interest in having this variation
> of array iteration in ES6?
>
> I would prefer not. Sparse arrays are really rare and for the few c
On Mon, Nov 12, 2012 at 5:39 PM, Allen Wirfs-Brock wrote:
> So the question on the floor: is there any interest in having this
> variation of array iteration in ES6?
>
I would prefer not. Sparse arrays are really rare and for the few cases
these are used I expect the author to be willing to pay
In the Oct. ES6 draft you may noticed that there is an editor's comment
attached to each of sections 15.4.4.23-25. These are the definitions of the
items, keys, and values methods on array objects. The note says:"Need to
decide whether to allow an argument that requests sparse iteration". In
Asen, as mentioned what I meant is that I would sparse.filter(Object); once
if that's about having a repeated iteration.
This let you avoid the Boolean.bind(null, true) if that was the concern but
I have no idea about performances.
There are too many libraries to change in order to support this d
if it's about iterating you have forEach which does not iterate over non
assigned indexes ... this looks like you want a new feature with an ES5
method as filter is so that you can use an ES3 for loop after ...
I mean, you have forEach, map, etc to iterate valid indexes, why would you
need that?
Hi,
Array.prototype.filter could be used to convert sparse to dense array, e.g.
[1,2,3].filter(Boolean.bind(null, true)); //[1, 2, 3]
Would be pretty straightforward if built-in filter could be called without
callback function and returns a dense array.
I guess the engines will optimize
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