Map/Set.prototype.size

Erik Arvidsson erik.arvidsson at gmail.com
Fri Oct 12 08:19:49 PDT 2012


+1

On Fri, Oct 12, 2012 at 11:16 AM, David Bruant <bruant.d at gmail.com> wrote:
> Hi,
>
> Firefox has implement a Map/Set.prototype.size *method* to query the number
> of mapping/elements.
> It's not in the strawman. It appears in the latest draft, though weirdly
> enough Map.prototype.size is a function with an unused argument.
> What about making it an getter instead of a function? I guess we also don't
> need the extra parens to request for Map#keys, Map#values, Map#items.
>
> Unlike Java, JavaScript is lucky enough to have getter/setters, we should
> use them, even in the spec. The boat for myArray.length has sunk a while
> ago, but new constructs can get this right.
>
> David
>
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-- 
erik


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