Map.prototype.clear method

Jason Orendorff jason.orendorff at gmail.com
Mon Oct 22 12:14:17 PDT 2012


On Mon, Oct 22, 2012 at 1:32 PM, Domenic Denicola
<domenic at domenicdenicola.com> wrote:
> On Mon, Oct 22, 2012 at 11:11 AM, Axel Rauschmayer <axel at rauschma.de> wrote:
>> What about copying of these new data structures?
>
> Isn't it already specced to work, for Set at least, since it accepts any
> iterable?
>
> let copy = new Set(original);
>
> I don't recall offhand if Map accepts an iterable of [key, val] pairs, but
> if it doesn't yet, maybe this provides an argument that it should.

Yes, it is specified that way in the latest draft. The Map in Firefox
supports this.

-j


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