On Fri, Oct 2, 2015 at 12:09 PM, Steve Fink <[email protected]> wrote: > I don't know, but I can speculate. It's not at all obvious how ...args in > the middle should behave: what if you have two rest arguments? Is that > forbidden, or is one greedy? What if one of the trailing parameters has a > default value? Also, iiuc the spec treats "undefined" the same as > "nonexistent" in most places. So what should your function do when passed > (1, 2, 3, undefined)? > > In short, it seems like a hairball of complexity for no real gain.
Yes, this has been discussed in the past, and issues like what you brought up are the reason we've rejected it. There's lots of ambiguous situations, no clear answer for most (any?) of them, and the benefit is minimal. ~TJ _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
