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

On Thu, Jun 27, 2013 at 3:19 PM, Boris Zbarsky <> wrote:
> 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?

Oh, there's no built-in method for that yet (like Python's
Dict#update() method), so you'd use the first case I illustrated
(manually iterating through the source map and setting the values into
the destination map).


Received on Thursday, 27 June 2013 23:00:05 UTC