Re: [webidl] Add a [Maplike] tag?

On 6/27/13 6:13 PM, Tab Atkins Jr. wrote:
>> How would one copy one Map into another in ES?  Presumably whatever the
>> idiom is for that is how this should work...
>
> Using the constructor:
>
> var m2 = new Map(m1);

That's if you're creating the copy yourself.  How would you do it if 
you're copying into a Map someone provided to you?

-Boris