On Apr 3, 2013, at 9:17 PM, Peter Michaux wrote: > On Fri, Mar 29, 2013 at 5:04 PM, Allen Wirfs-Brock > <[email protected]> wrote: >> >> On Mar 29, 2013, at 3:02 PM, Peter Michaux wrote: > > >>> 15.16.4.6 >>> >>> Why will callbackfn be called with the first two parameters being the >>> same? That does not seem like the most practical or intuitive behavior >>> for a set. >> >> >> The intent is that all forEach methods use the same callback signature. >> This is explained in the second note. >> >> >>> The third NOTE about visiting elements that are deleted or added >>> during iteration is excellent. Browsers have certainly varied in their >>> behavior. >> >> >> Yes, but this is just a note. The specification algorithm normatively >> exhibit this behavior which is where it really counts. > > In that case, I think the second note might be an error. The > specification algorithm has the following > > 8.a.i) Let funcResult be the result of calling the [[Call]] internal > method of callbackfn with T as thisArgument and a List containing e > and S as argumentsList. > > That means the callback function is called with only two arguments not > three as mentioned in the second note. >
Actually, the code in the algorithm was wrong. I've fixed it to pass three arguments. Thanks, Allen _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
